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One of the chief of the iconoclasts was Archbishop Diego Survey, in 1890 and 1891.--Hudson River "Fiord,” by Dr. de Landa ; but, luckily, his zeal was tempered by a considerable

Arthur M. Edwards.-Contributions to mineralogy, No. 52, by appreciation of the ingenuity of the Indians, and an interest in F. A. Genth ; with crystallographic notes by Samuel L. Penfield. their manners and customs, which induced him to make some

The minerals described are bübnerite, hessite, bismutite, and notes on their method of writing and recording events.

natrolite. — Tschermak's theory of the chlorite group and its It is to this that we owe what is commonly known as “ Landa’s alternative, by F. W. Clarke.—Recent fossils near Boston, by alphabet”; but, as this was an attempt to make an alphabet Warren Upham. Fossil marine shells of the post-Glacial epoch of a language which in all probability was not written alpha

have been lately discovered near Boston, indicating slight recent betically but syllabically, it was a signal failure, and has proved,

changes in the relative levels of land and sea, and proving conto the few scholars who have attempted to employ it, about as

siderable changes in the temperature of the sea there. - The puzzling as the hieroglyphics themselves, However, it may highest old shore line on Mackinac Island, by F. B. Taylor.ultimately be of some use, and it was accompanied by an ex

On the nature of colloid solutions, by C. E. Linebarger. It is planation of the calendar system, and a list of the signs for the

generally believed that solutions of colloid substances, such as days and months, with their names, which is of the greatest albumen or silicic acid, differ in their nature from solutions of value.

crystalloid substances. The author's experiments indicate that Although no Maya books are known to exist in America,

colloid solutions are solutions in the ordinary acceptation of the three examples of what are undoubtedly genuine Maya manu

term, and not "suspensions."-Observations upon the structural scripts have turned up in Europe.

relations of the Upper Huronian, Lower Huronian, and BaseNo information whatever is forthcoming as to how they got

ment Complex on the north shore of Lake Huron, by Raphael here, but it is not unlikely that they were sent over as curiosities

Pumpelly and C. R. Van Hise. -A phasemeter, by John at the time of the Spanish conquest, and were afterwards lost Trowbridge. The phasemeter is an instrument devised for the sight of.

investigation of questions of the phase of alternating electric They are the “ Codex Troano," now preserved in the Archæo.

currents in transformers and in branch circuits. Two telephone logical Museum at Madrid, a chromolithographic copy of which diaphragms have mirrors fixed upon them. A spot of light was published by the Abbé Brasseur de Bourbourg; the

reflected from one of the mirrors is given a horizontal movement "Dresden Codex," preserved in the Royal Library at Dresden,

when the diaphragm is vibrating, while the other mirror, when of which a beautiful photolithographic copy has been published its diaphragm moves, gives a spot of light a vertical motion. under the direction of Prof. Försteman; and the “Codex Pere

By the combination of the two motions, figures are obtained sianus,” in the Bibliothèque Nationale at Paris. Another similar to those of Lissajous in the case of tuning-forks; and manuscript at Madrid, which has been called the “Codex from these, the difference in phase of the currents which set the Cortesianus," appears to be only a detached portion of the

diaphragms in motion can be found. - Preliminary report of “ Codex Troano.

observations at the Deep Well, Wheeling, West Virginia, by An examination which I have made of the two first-mentioned

William Hallock.–Mount Bob, Mount Ida, or Snake Hill, by of

T. W. Harris.

are identical, and others only vary as much as might be expected by

each other, by Dr. M. I. Pupin. The experiments described the change from carving on stone to writing on paper. In

show that iwo electric current filaments in a rarefied gas may addition to this evidence of the eyes, there is the distinct state

repel each other in cases where electrodynamic action would ment of Cogolludo, the historian of Yucatan, that the Indians

produce an attraction. The repulsion does not appear to be had characters by which they could understand one another in

due to electrostatic action, but rather to “a strain in the vacuum writing, such as those yet seen in great numbers on the ruins of produced by the peculiar distribution of the gas pressure result. their buildings.”

ing from the peculiar distribution of temperature."-On a So that we arrive at the important conclusion that the lan

melilite-bearing rock (Alnoite) from Ste. Anne de Bellevue, dear guage of the carved inscriptions of Copan, Quirigua, and Palenque

Montreal, Canada, by Frank D. Adams.-On an azure-blue is still a living tongue, although it has doubtless heen much

pyroxenic rock from the Middle Gila, New Mexico, by George changed in the course of years.

P. Merrill and R. L, Packard.-On the correlation of moraines ALFRED P. MAUDSLAY.

with raised beaches of Lake Erie, by Frank Leverett. Magnesium as a source of light, by Frederick J. Rogers. The

results of this investigation are summed up as follow :-(1) The UNIVERSITY AND EDUCATIONAL spectrum of burning magnesium approaches much more nearly INTELLIGENCE.

that of sunlight than does the spectrum of any other artificial

illuminant. (2) The temperature of the magnesium flame, about CAMBRIDGE.-Mr. C. E. Ashford, B.A. of Trinity College, 1340° C., lies between that of the Bunsen burner and that of the has been appointed Assistant Demonstrator of Physics in the air-blast lamp, although the character of its spectrum is such as Cavendish Laboratory.

would correspond to a temperature of nearly 5000° C. were its Dr. William Ewart and Mr. Frederick Treves have been

light due to ordinary incandescence. (3) The “radiant appointed additional examiners in Medicine and Surgery efficiency” is 135 per cent., a value higher than that for any respectively.

other artificial illuminant, excepting, perhaps, the light of the Tbe Cavendish Prosessor announces a course of lectures on

electric discharge in vacuo for which Dr. Staub, of Zürich, has Electrolysis and Solution, to be given by Mr. W. C. D. sound an etficiency of about 34 per cent. (4) The radiant Whetham on Thursdays and Saturdays during the present term. energy emitted by burning magnesium is about 4630 calories

Seventeen candidates were approved for the diploma in
Public Health at the extra examination held at the beginning of of combustion, as compared with 15 per cent. to 20 per cent.

per gram of the metal burned, or 75 per cent. of the total heat the month. T. Clifford Allbutt, M.D., F.R.S., the newly appointed of one candle-power-minute of magnesium light is about 24

in the case of illuminating gas. (5) The thermal equivalent Regius Professor of Physic, has been elected to a Fellowship lesser calories, as against 3.5 to 4 'o for other artificial illuminants. at Gonville and Caius College.

(6) The total efficiency of the magnesium light is about 10 The Shuttleworth Scholarship in Botany has been awarded to

per cent., as compared with 0-25 per cent. for illuminating gas. 1. H. Burkill, B.A., Assistant Curator of the Herbarium,

(7) Taking into consideration the greater average luminosity of The memorial in Westminster Abbey to the late Prof. J. C.

the rays of the visible spectrum of the magnesium flame, it is Adams, will be placed in the sill of the window on the north

certain that per unit of energy expended, the light-giving power side, nearest to the monument of Newton. A large and very of burning magnesium is from fifty to sixty times greater than influential committee has been formed for the purpose of estab- that of gas.-A method for the quantitative separation of barium lishing the memorial.

from calcium by the action of amyl alcohol on the nitrates by

P. E. Browning.-On plicated cleavage foliation, by T. Nelson SCIENTIFIC SERIALS.

Dale.-Geological age of the Saganaga syenite, by A. R. C.

Selwyn.-A third occurrence of peridotite in Central New American Journal of Science, March.- Mount St. Elias and York, by C. H. Smith.-A fulgurite from Waterville, Maine, its glaciers, by Israel C. Russell. Account is given of the by W. S. Bayley.--Mineralogical notes on brookite, octahedrite, country explored by two parties sent to Alaska by the National quartz, and ruby, by G. F. Kunz.–Recent polydactyle horses, Geographic Survey, in connection with the U.S. Geological by 0. C. Marsh.

SOCIETIES AND ACADEMIES.

blade formed of thin aluminium, and made as nearly as possible LONDON.

into the exact shape of a portion of a helicoid. A similar

instrument with a larger blade, and with the dial protected from Entomological Society, April 13. —Mr. Henry John Elwes,

the weather, would probably form a useful and correct anemoVice-President, in the chair. -Mr. R. McLachlan, F.R.S., meter. It would be light, and offer a very trifling resistexhibited specimens of a Caddis-fly remarkable for the abbre- ance to the wind. The oscillations of the pressure plate must viated wings of the male, the female having fully developed have been considerably damped by the action of the Roatwings. He alluded to the Perlide as including species in which ing weight, but as it was, they were sufficiently violent. It the males were frequently semi-apterous. Dr. Sharp, F.R.S., seems probable that the remarkably high values sometimes inquired if Mr. McLachlan was aware of any order of insects, given by the Osler pressure plate may be due to the inertia of except the Neuroptera, in which the organs of Night were less the moving parts. The tube anemometer appears to possess developed in the male than in the female. Mr. C. G. Barrett

numerous advantages. The head is simple in construction, and and Mr. H. J. Elwes cited instances amongst the Bombycida in so strong that it is practically indestructible by the most violent which the wings of the male were inferior in size and develop. hurricane. The recording apparatus can be placed at any ment to those of the female. —Dr. Sharp exhibited specimens of reasonable distance from the head, and the connecting pipes both sexes of an apparently nondescript Phasmid insect allied to may go round several sharp corners without harm. The power Orobia, obtained by Mr. J. J. Lister in the Seychelles Islands, is conveyed from the head without loss by friction, and hence together with Phyllium gelonus. He also exhibited specimens the instrument may be made sensitive to very low velocities of both sexes of an insect remarkable for its great general without impairing its ability to resist the most severe gale. - The resemblance to the Phasmida, though without resemblance, so hurricane over the West Indies, August 18–27, 1891, by Mr. F. far as is known, to any particular species. In reference to the Watts. The author has collected a number of observations on Phyllium, Dr. Sharp called attention to the fact that the simi- this violent hurricane, which on August 18 swept from the larity of appearance of parts of their organization to portions Atlantic into the Caribbean Sea, and moved in a north-northof the vegetable kingdom was accompanied by a similarity, westerly direction over San Domingo, and thence northward amounting almost to identity, of minute structure. He said and eastward. At Martinique the barometer, which at 5.30.p.m. that it had been stated that the colouring-matter is indistinguish. stood at 29.80 inches, fell to 28.38 inches at 8.15 p.m., during able from chlorophyll, and that Mr. Lister had informed him

the passing of the centre of the cyclone. that when in want of food a specimen of the Phyllium would eat portions of the foliaceous expansions of its fellows, although Chemical Society, March 30. - Annual General Meeting. the Phasmida are phytophagous insects. The resemblance to Prof. A. Crum Brown, F.R.S., President, in the chair. - The vegetable products reached its maximum of development in the President delivered an address, in the first part of which he egg; and M. Henneguy had observed that when sections of referred to the favourable position of the Society. In the the external envelope of the egg of Phyllium are placed under remainder of his address he dwelt chiefly on the work which is the microscope no competent botanist would hesitate to pro- being done on the border-lines of chemistry proper, referring nounce them to belong to the vegetable kingdom. – Mr. both to that by which an approach is gradually being made Barrett exhibited, for Major J. N. Still, a specimen of Notodonta towards understanding the che mistry of Nature's organic bicolora, which had been captured in a wood near Exeter. laboratory, and to the solution of chemical problems by the Major Still had stated that the captor of the specimen was application of mathematical and physical methods of inquiry. unaware of the great rarity of the species. Mr. Barrett also A vote of thanks to the President was carried by acclamation. exhibited, for Mr. Sydney Webb, some remarkable varieties Aster the usual reports by the officers of the Society had been of Argynnis adippe and Cænonympha pamphilus ; also two presented, a ballot was taken for the election of officers and specimens of Apatura iris, and two of Limenitis sybilla in Council for the ensuing year. The following were subsequently which the white bands were entirely absent. -The Hon. Walter

declared elected :-President : A. Crum Brown, F.R.S. ViceRothschild exhibited, and contributed preliminary notes on,

Presidents who have filled the office of President : Sir F. Abel, some hundreds of Lepidoptera, representative of a collection of

F.R.S. ; W. Crookes, F.R.S. ; E. Frankland, F.R.S; J. H. about 5000 specimens recently made by Mr. W. Doherty, in Gilbert, F.R.S; J. H. Gladstone, F.R.S. ; A. W. Hofmann, the south-west of Celebes. Many of the species were new, and F.R.S. ; H. Müller, F.R.S.; W. Odling, F.R.S. ; W. H. others very rare. Mr. Elwes, Colonel Swinhoe, and Mr. Perkin, F.R.S. ; Sir L. Playfair, F.R.S. ; Sir H. E. Roscoe, S. Stevens commented on the interesting nature of this collec

F.R.S. ; W. J. Russell, F.R.S. ; A. W. Williamson, F.R.S. tion.-Mr. E. B. Poulton, F.R.S., gave a lecture “On the Vice-Presidents : A. V. Harcourt, F.R.S. ; W. N. Hartley, Denudation of the Scales in certain Species of Lepidoptera,' F.R.S. ; J. Pattinson; W. Ramsay, F.R.S. ; W. A. Tiland illustrated it by a large number of photographs shown by den, F.R.S.; R. Warington, F. R.S. Secretaries : H. E. means of the oxy-hydrogen lantern. Mr. G. Ė. Hampson,

Armstrong, F.R.S. ; J. M. Thomson. Foreign Secretary : Mr. Elwes, and Mr. Poulton took part in the discussion which R. Meldola, F.R.S. Treasurer: T. E. Thorpe, F.R.S. ensued.

Ordinary members of Council: H. Bassett; N. Collie: H.

Dixon, F.R.S. ; J. Ferguson ; R. J. Friswell ; J. Heron; M. Royal Meteorological Society, April 20.-Dr. C. Theo

M. P. Muir; F. J. M. Page ; W. H. Perkin, Jun. F.R.S.; dore Williams, President, in the chair. - Reference was made to

S. U. Pickering ; J. A. Voelcker ; W. P. Wynne.-Correction the death of Dr. J. W. Tripe, who had held the office of Council of a note on a new acid from camphoric acid, by W. H. Perkin, Secretary for the last twenty years, and a resolution of sympathy Jun. The author desires to express regret that he had overwith the family was passed by the meeting: -The following papers | looked a previous paper by Damsky, in which an account is were read :-Anemometer comparisons, by Mr. W. H. Dines. given of the acid recently described by him as new. This was a report on a valuable series of experiments which have been carried out at the request of the Council of the

Mathematical Society, April 14.-Prof. Greenhill, F.R.S., Society, with the view of obtaining a direct comparison of the President, in the chair.—The following six foreign mathemavarious anemometers in common use, so that some opinion ticians were elected Honorary Members of the Society, viz. might be formed as to which type of instrument is the most Messrs. Poincaré, Hertz, Schwarz, Mittag-Leffler, Beltrami, suitable for general purposes. The Meteorological Council and Willard Gibbs.-The following short communications were have defrayed the cost of the work. The anemometers which made :-Second note on a quaternary group of 51,840 linear were compared were—(1) Cew pattern Robinson ; (2) self. substitutions, by Dr. Morrice.- Note on the skew surfaces adjusting helicoid ; (3) air meter ; (4) circular pressure applicable upon a given skew surface, by Prof. Cayley, F.R.S. plate (one foot in diameter); and (5) a special modification of -Mr. A. B. Kempe, F.R.S., made an impromptu communica. tube anemometer. Most of these instruments are of the tion on regular graphs. -Mr. J. J. Walker, F.R.S., Dr. M. J. author's own invention, as well as the apparatus for obtaining M. Hill, Lieut. Colonel Cunningham, and the President joined automatic and simultaneous records from all the instruments

in the discussion on the above communications. upon the same sheet of paper. It appears that the factor of the

EDINBURGH. Kew pattern Robinson is practically constant, and must lie between 2'00 and 2.20. The helicoid anemometer is quite Royal Society, April 4.-Sir Arthur Mitchell, Viceindependent of friction for all excepting light winds, and differ- President, in the chair. --Dr. Thomas Muir read a paper on a ent sizes read alike, but it is not so simple in construction as problem of Sylvester's in elimination, and also a note od the cup form. The air meter consists of a single screw | Prof. Cayley's proof that a triangle and its reciprocal

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perspective. - Prof. Blackie read a paper on the most recent

Bacterium Allii, by Dr. A. B. Griffiths. In a former paper phases of Greek literary style. The style of the educated Greek Dr. Griffiths described and named Bacterium Allii-a microand the popular style were brought into closer correspondence organism found by him. This Bacteria produces a green pigthan previously at the commencement of the present century, ment, soluble in alcohol, and possessing a particular absorption chiefly through the influence of Coraes. In this paper Prof. Blackie investigates the result of that amalgamation,

Since

spectrum. In the presence of albuminoids, Bacterium Allir 1830, the development of the Greek language has heen most

gives rise to a crystallizable ptomaine, which furnishes a marked. The higher classical style has been constantly gaining (

CH NHCI)Pt,C14. The analysis of the base gave the

chloroplatinate, having the formula, according to analyses, ground, so that popular and literary Greek now differs as little from ancient classical Greek as Scotch does from English ; platinate.

formula CN, which corresponds to that of chlorowhile, previous to the time of Coraes, they were as distinct as present-day English is from the English of Chaucer. The author gives examples of the deviations of the literary and popular Greek of various epochs from ancient Greek, which BOOKS, PAMPHLETS, and SERIALS RECEIVED. prove a rapid return to the ancient purity of language. Thus,

Books. The Apodidæ: H. M. Bernard (Macmillan). --Tanganyika : E. while in twelve lines of Romaic Greek eighteen or twenty C. Hore (Stanf rd). -Epidemics, Plagues, and Fevers : Hon. Rollo Russell deviations from the pure style may be found, in twelve lines of (Stanf rd). -Hand-book of Jamaica, 1892 (Stanford). - A Treatise on Physical modern Greek only two or three such deviations appear. In

Optics : A. B Basset (Bell). - The Land fall of Lief Erikson, A.D. 1000: E.

N. Horsf rd (Boston, Damrell and Upham)-A Guide to Electric Lighting : the first five verses of the second chapter of Luke, nineteen

S Bottone (Whittaker). - Elementary Lessons in Heat: S. E. Tillman, 2nd deviations occur in the Romaic New Testament, while in the edition (Gay and Bird). -Les Alterations de la Personnalité : A. Binet (Paris, same passage in the English Bible Society's version of 1890 only Alcan). - Thermodynamische Studien: J. W. Gibbs, translated by W. four are found. In two pages of a recent number of a Greek

Ostwald (Leipzig, Engelmann). - English Botany. sunplement to the 3rd edition, Part 1:

N. E Brown (Bell). – Progressive Mathematical Exercises, newspaper only two deviations occur. — Dr. Berry Haycraft com- and series; A. T Richardson (Macmillan). municated a contribution, by Mr. F. E. Beddard, to the anatomy PAMPHLET.-The Wheat Plant, h wit' Feeds and Grows: W. Carruthurs of Sutroa

(also 8 diagrams) (W. and A K. Johnston). Paris,

SERIAIS. - Proceedings of the Rochester Academy of Science, vol. i.

Brochures 1 and 2 (Rochester, NY.). - Brain, Part 57 (Macmillan). Academy of Sciences, April 19.-M. d'Abbadie in the Journal of the Bombay Natural History Society, No. 4 vol. vi. (Bombay) chair.-Calculation of the diminution which is experienced by (Spon). --Bulletin of the New York Mathematical Society, vol. I, No. 1 the mean pressure on a fixed horizontal plane, in the interior of New York). — Physical Society of London, Proceedings, vol. xi. Part 3 a heavy liquid filling a basin and agitated by certain wave (Taylor and Francis). ---Proceedings of the Geologists' Association, vol. xii.

Part 7 (Stanford) - Journal of the Royal Microscopical Society, April motions, hy M. J. Boussinesq:- Note by M. Faye accompanying

(Williams and Norgate) -A Manual of Orchidaceous Plants, Part 8 the presentation of celestial photographs obtained at Heidelberg Veitch). – Notes from the Leyden Museum, vol. xiv. Nos. 1 and 2 (Leyden, by Dr. Max Wolf, Director of the Observatory. The photo. Brill) --American Journal of Mathematics, vol. xiv. No. 2 (Balti nore: graphs commented upon by M. Faye are those recently taken of

Transactions of the Royal Society of Victoria, vol. ii. Part 2, 1891 (Mel

bourne). - Report of the Geological Survey of India, vol. xxv. Part 1 a part of Cygous, and that on which the trail of a new asteroid

(Calcutta). was detected ; also a picture showing a shooting-star which crossed the field of observation during exposure. The photographs were taken by means of a portrait-lens 2} inches in diameter --On the optical measure of high temperatures, by

CONTENTS.

PAGE M. A. Crova.-Researches on the formation of planets and satellites : memoir by M. E. Roger, presented by M. Jordan.

Theoretical Chemistry. By Prof. M. M. Pattison
Muir

601 The author has developed a complex relation connecting the distances of planets from the sun, and also one connecting

The Travels of a Painter of Flowers. By W. B. H. 602

603 the distances of planets from their satellites. -Observations of American Town Trees Swift's comet (1892 March 6), made with the Brunner equa

Our Book Shelf:torial of Lyons Observatory, by M. G. Le Cadet. Observations

Briggs: “Synopsis of Non-Metallic Chemistry” for position were made on April 3, 4, 8, 9, 11, and 15.-On

Whiteley : "Chemical Calculations”

ir The Year-book of Sciences

Bonney : differential invariants of a surface with respect to conformable

604 transformations of space, by M. Arthur Tresse. -On the accuracy

“ Handy Atlas of Modern Geography

Letters to the Editor :of comparis'ins of a mètre à bouts with a mètre à traits, by M.

Aurora.-Geo. M. Seabroke ; Arthur Marshall ; Bosscha.—Researches on the secondary wood of A petales, by

Arthur E. Brown
M. C. Houlbert.--On the relations existing between the form
and nature of the beds of andalusite at Ariège, by M. A.

Pigments of Lepidoptera.-F. H. Perry Coste;
Prof. R. Meldola, F.R.S.

605 Lacroix. It appears that at Ariège the form of the andalusite is characteristic in each bed to such an extent that, given a

Eozonn.-Sir J. William Dawson, F.R.S.

606

боб geological map of the region, it is possible to indicate a priori

The Theory of Solutions.-Prof. W. Ostwald where the mineral would be found, and conversely, given a

Physiological_Action of Diminished Atmospheric
Pressure.-F. R. Mallet

606 specimen of andalusite, the geological nature of the bed from which it was taken could be stated with very little chance of

Sensitive Water Jets.-W. B. Croft

606

607 error. The facts described by M, Lacroix are thus as useful to

Double Orange. — Gerald B. Francis . the geologist as to the mineralogist.—On the loess of Turkestan,

On the Line Spectra of the Elements. By Prof. C. by M. Guillaume Capus.

Runge

Aberrant Fossil Ungulates of South America. By
BRUSSELS.
R. L...

608 Academy of Sciences, March 5.—The following com- The Changefulness of Temperature as an Element municati ns were read :—The male of certain Caligides, and a of Climate. By H, F. B.

610 new species of this family, by M. P. J. Van Beneden. The Forestry in America. By Prof. w. R. Fisher 611 author describes (1) the male of Pandarus Cranchii ; (2) the Notes

612 male and female Pandarus affinis, n. sp. ; (3) a new species, Our Astronomical Column:Chlamys incisus; and (4) the male of Dinematoura elongata.- Spectrum of Nova Auriga

616 Theoretical determination of the radius of the sphere of mole- Photographs of the Region of Nova Cygni cular activity of liquids in general, by M. P. De Heen. The Winnecke's Comet conclusion is arrived at that the radius of the sphere of activity Personal Equations in Transit Observations is proportional to the product of surface tension into molecular The Sirius System volume. -On the curve in conic sections, by M. Cl. Servais. – The Ancient Civilization of Central America. (With Researches on the physiology of respiratory centres, by Dr. Map.) By Alfred P. Maudslay

617 Allred Bienfait. The author adduces evidence to show that University and Educational Intelligence

622

622 a single respiratory centre, isolated by two transverse sections Scientific Seriais from the accessory respiratory centres, controls the movements Societies and Academies

623 of the glottis.-On a new ptomaine obtained by the culture of Books, Pamphlets, and Serials Received

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A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE.

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FARLEY ROAD, MALVERN LINK,
Physical Laboratory, Cambridge, Examiner in Physics.
A. H. GREEN, M.A., F.R.S , Professor of Geology in the University of

WORCESTERSHIRE.
Oxford, Examiner in Geology and Palæontology.
C. H HERFORD, Litt. D., Professor of English Literature in University

MODELS OF DIAMONDS.
College, Aberystwith, Examiner in English language and Literature.
W. M. HICKS, M.A., Professor of Mathematics in Firih College, Sheffield, As exhibited in the Loan Collection in South Kensington

Examiner in Mathematics.
ROBERT MAGUIRE. M D., F.R.C.P., Lecturer on Pathology, St.

Museum,
Mary's Hospital, London, Examiner in Pathology and Morbid

1.–Facsimile of 28 of the most celebrated White and Coloured Diamonds, Anatomy G. R. M. MURRAY, F.L.S., Senior Assistant, Department of Natural

executed in Crystal Glass, of great lustre. to which has just been added a History, British Museum. Examiner in Botany.

Model of the Black (unique) Diamond of Punnah, in the possessi in of the A. G. PESKETT, M.A., Fellow and Classical Lecturer, Magdalene

Maharajah of Punnah, in handsome Morocco Case with descriptive CataCollege, Cambridge, Examiner in Classics.

logue. Price £10 os. +REGINALD L. POOLE, M.A., Ph D., Lecturer on Modern History in

2: ---30 Models natural Crystals of Diamonds and Coloured Precious Stones, Jesus College, Oxford, Examiner in History.

artistically and beautifully cut in imitation of originals, exhibited in Paris WILLIAM RAMSAY, Ph.D, F.R.S., Professor of Chemistry in Uni

Exhibition of 1878, and obtained the Bronze Medal : in handsome Morocco

Case. Price £6 6s. versity College, London, Examiner in Chemistry. EDMUND ROBERTSON, M.A., M.P. (late), Professor of Roman Law

Richly gilt Model and facsimile of the “Welcome” Gold Nugget, of in University College, London, Examiner in Law.

Australia, largest known. Original weight 2166 oz. Value of the Gold, C. S. SHERRINGTON, M.B., Lecturer on Physiology in St. Thomas's

£8376 ros. rod. Price 63 38., or in handsome Glass Shade, 22 X 11, 65 ş. Hospital, London, Examiner in Physiology:

Set of imitations of Precious Stones" in Morocco Case, 48 sp., Price

30s. A. R. SIMPSON, M D., F.R.C.P., Professor of Midwifery in the University of Edinburgh, Examiner in Obstetrics and Diseases of Women.

Address--ROBERT F. DAMON, Weymouth. THOMAS STEVENSON, M.D., F.R.C.P., Lecturer on Chemical and

Medical Jurisprudence, Guy's Hospital, London, Examiner in Forensic F. H. BUTLER, M.A. Oxon., Assoc.R.S. Mines,

Medicine and Public Health.
RALPH SIOCKMA V, M.D., Examiner in Materia Medica and Pharmacy

NATURAL HISTORY AGENCY,
and Pharmacology and Therapeutics.
1 D'ARCY W.THOMPSON, B.A., Professor of Zoology in University Col.

158 BROMPTON ROAD, LONDON, lege, Dundee, Examiner in Zoology. JAMES WARD, M. A., Sc.D., Lecturer on Philosophy in Trinity College,

Dealer in Rocks, Minerals, Fossils, and other objects Cambridge, Examiner in Philosophy and Political Economy.

of Scientific Interest. The Examiners against whose names a dagger(t) is placed retire at the end of November. Applications are invited for the posts they now fill,

Now on view: numerous recently acquired Jurassic fossils, Chalk Echino which should be sent in on or before NOVEMBER 28. and may be

derms, including Marsupites from Burpham; a fine series of palatal teeth of accompanied by Testimonials (Copies only) or References, at the Candidate's

Halodus, Sanda odus, Oracanthus, Tomodus, Deltodus, and Orodus, besides discretion. The appointments will be for Three Years, at the expiration of

a large collection of well-characterized corals from the Black Rocks of which Examiners are not eligible for re-election.

Clifton, Bristol, now no longer worked; also excellent examples of Tremadoc For further Particulars, apply to

Trilobites, e.g. species of the genera Neseuretus and Angelina, from Garth, A. T. BENTLEY, M.A., Registrar.

Og of Velvet, and other classical localities; and Devonian fish-remains from Manchester. October 1891.

Caithness and Banff. Among the recent additions to the stock of minerals

are various old Cornish species, and a few Gloucestershire Celestines of BALLIOL COLLEGE,CHRIST CHURCH, abnormal habit.

AND

TO GEOLOGICAL, &c., STUDENTS.

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TRINITY COLLEGE, OXFORD. NATURAL SCIENCE SCHOLARSHIPS AND EXHIBITIONS.

A combined Examination for Natural Science Scholarships and Exhibitions will be held by the above Colleges, beginning on TUESDAY, NOVEMBER 17. 1891.

Three Scholarships and Two Exhibitions will be offered, the Scholarships being worth £80 a year.

The subjects for examination will be Physics, Chemistry, and Biology, but Candidates will not be expected to offer themselves in more than two of these.

Particulars may be obtained by application to A. VERNON HARCOURT,
Christ Church. Oxford.
BEDFORD COLLEGE, LONDON

(FOR WOMEN),
8 and 9 YORK PLACE, BAKER STREET, W.
The HALF TERM will BEGIN on THURSDAY, NOVEMBER 12.
All inquiries to be made of

LUCY J. RUSSELL, Honorary Secretary. THE AGRICULTURAL COLLEGE,

ASPATRIA.

PRINCIPAL-DR. H. J. WEBB, B.Sc.
Thorough practical and scientific Training in Agriculture. Preparation
for the Colonies. Students gained the First, Third, and Fourth Scholar.
ships of the Royal Agricultural Society, 1888; First in Agriculture Junior
Scholarships. 1889: First in Agriculture Senior Scholarships, 1890

CONCHOLOGY.
New and Interesting Shells from New Guinea,

Borneo, Philippine Islands, &c.

JAMES R. GREGORY can now supply Special Sets of Microscopic
Slides and Sections to illustrate Physiography and Geology, prepared
expressly for him in the best manner.
Series A contains 6 Slides (Physiography) in Case, 6s. 64. ; Post, 2d.
B
12 Slides (ditto)

125. 6d.;
С 12 Slides, Typ. Ign. Rocks ; 18s. Post free.
D

12 Slides, Sedim. and Metam. Rocks, in Case, 18s.

Post free.
E

36 Slides, Typical Rock Sections, in Polished Wood

Case, £2 125. 6d. Post free.
Lists of Contents of these Sets Free on application.
All Sections in General Lists of Rock Sections. Several Hundred Varieties

many rare and interesting. REDUCED to 1s. 60. EACH.
Collections, Specimens, Apparatus, &c., as usual.

JAMES R. GREGORY,
88 CHARLOTTE STREET, FITZROY SQUARE, W.

MINERALOGY.

SAMUEL HENSON,

97 REGENT STREET, LONDON, W. ESTABLISHED 1840.

Late 277 STRAND. Choice Mineral Specimens, Gem Stones, Carved Opals, Polished Agates, Rock Crystal Balls, Fossils, Rocks, and Rock Sections.

COLLECTIONS PURCHASED.
All kinds of Glass-Topped Boxes, &c., at Moderate Prices.
HUGH FULTON, Dealer in Recent Shells,

89 FULHAM Road ·LONDON, S.W.

LATEST ARRIVALS.
Fine Native Silvr with Green Blende, Orange Yellow Wulfenites, Brown
Vanadinite. large series of beautiful Mocha Stones. very interesting and
beautiful groups of Crystallized Calcite, Barytes, and Specular Iron with
Quartz.

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