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The average annual decrease for piston, a volume of air equal to six the century preceding 1821 appears, hundred and forty-five cubic centimefrom the most authentic observations, tres (21 feet 2 inches cubic). With to have exceeded 3. On examining the ordinary machines, 200 men would the series of observations inade on the be required to produce the same effect. dip in Paris since 1798, by MM. Humboldt, Gay Lussac, and Arago, MODE OF PRESERVING STUFFED the author had a corresponding indi

ANIMALS. cation of a recent diminution in the It is stated in the last Number of yearly decrease of the dip ; it appear- the Journal des Connaissances Usuing, by those observations, that the elles, that a bladder filled with rectiaverage yearly decrease in the first fied essence of turpentine, closely tied, half of the period between 1798 and and placed in the cupboard in which 1828, exceeded 4.75, and in the se- are stuffed animals or birds, will efcond half fell short of 3'.

fectually secure them from the ravages

of insects. The smell of the turpenGELATINE.

tine, evaporating through the bladder, The use of gelatine from bones is destroys any insects which may alreabecoming very general in the French dy exist, and will prevent the aphospitals as an article of diet. In the proach or production of others. hospital of La Charité in Paris, upwards of 1000 rations a day are pro- PROPORTION OF POWER TO VELOCITY duced by means of a steam-apparatus.

IN STEAM-BOATS. This gelatine is said to be much liked The following table of the power by the patients, as it is pure, and may necessary to give a steam-boat differbe flavored in any way that is desired. ent velocities, has been published by

Mr. Tredgold. PRESERVATION OF SPECIMENS OP 3 miles per hour, 51 horses' power.

PLANTS. The directors of the French Museum of Natural History, in their report on the specimens of plants col. lected in 1827, in Senegal, after ob

102 serving that the plants collected by 9

146 M. Leprieur, apothecary to the Navy, 10

200 had arrived in a very bad state of preservation, recommend travellers, if ASSURANCES AGAINST HAILSTORMS. they would not lose the valuable ob- The injury sustained from violent jects they have gathered, to steep all hailstorms by the agriculturalists of plants in an alcoholic solution of cor- France, and more particularly by the rosive sublimate.

cultivators of the vine, are so frequent

and so serious as to induce them to NEW COMPRESSION PUMP. have recourse to societies of assurAt the sitting of the Academy of ance, similar to the original instituSciences of the 16th May, 1500 tions for assurance against loss by fire francs, as the Monthyon prize for me- in England. An association of this chanical inventions, were awarded to kind has accordingly been formed in M. Thilorier, for the best contrivance Paris for mutual protection against for a compression pump. M. Navier, damage done by hailstorms in the 14 in making the report of the committee, departments around the capital. described the object and mode of operation of the invention. From these VACCINATION IN HUNGARY. it appears that, with the machine of There were vaccinated for the cowThilorier, six men are able to com- pox in Hungary, during the seven press, to the thousandth part of its years preceding 1926, 1,144,539 perhulk, at each rising and sinking of the sons.

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VARIETIES.

« Come, let us stray Where Chance or Fancy leads our roving walk.”

THE STUDY OF NATURE. row prison cell (witness Trenck's In these days of scepticism and scru- tame mice and musical spiders )—the tinizing, it may appear no easy mat- study of nature has been pursued ter to diffuse a belief in the existence with no less ardor than in the woods of a universal elixir, capable of ar- and fields—where to the enthusiastic resting or retarding the wane of life, naturalist so that " youth,” as the scriptures

Not a breeze beautifully express it, shall be “re

Flies o'er the meadow,-not a cloud imbibes

The setting sun's effulgence,--not a strain newed like the eagle's.” Yet, that

From all the tenants of the warbling shade such an elixir not only exists, but Ascends, but whence the bosom can partake may be procured with small difficulty Fresh pleasure. and at little expense, we think we If it be granted, therefore, that the can (upon premises granted) bring pleasures of childhood are more explausible argument to show. We quisite and contain less alloy than mean not to assert indeed that the those of riper years, it must be bewane of manhood may be brought cause then everything appears new back thereby to the bloom of infancy, and robed in all the fresh beauties of nor the decrepitude of age to the infancy,—whereas in adolescence, and standard of adolescence; but it will still more in manhood and old age,

-as we can aver upon the testimony whatever has frequently recurred, beof our own experience-impart a rud- gins to wear the tarnish of decay, or dier tint and a warmer glow to the to be tinged with the fading colors of blood,-enkindle a brighter expres- sun-set. That there are minds tuned sion in the eye,-and call up in the to the quiet apathy of reposing, like mind a train of thoughts fresh, lively, the imaginary gods of Epicurus, withbeautiful, and rapturous,

out a wish for a new feeling or a new Such as youthful poets dream,

idea, is no reason why those who “ are On summer's eve by haunted stream. not altogether of such clay" should

The elixir we allude to, is the Renounce the boundless store study of nature-embracing the whole

Which bounteous Nature to her vot'rios

yields ; range of the visible creation, from the The warbling woodland-the resounding almost invisible mite, to the huge

shoreleviathan who maketh the deep boil The pomp of groves, the garniture of fields

" All that the genial ray of morning gildslike a pot;-from the hyssop that And all that echoes to the song of Even. groweth on the wall, to the cedar of Lebanon ;- from the dew-drop, to IMAGINATION AND REALITY. the broad thunder-cloud that o'erca- I never like to compare the paintnopies the horizon ;-and from the ings of fancy with the originals. Regrain of sand on the seashore, to the alities are seldom the pleasantest planet which hangs self-balanced in parts of life. Hope, memory, and empyrean. This study is as inex- even enjoyment, are more than half haustible as it is delightful; it never imagination. Everything is mellowtires, because it is always new,-and, ed by distance ; and when we come what is more, it can be pursued in all too near, the airy softness is lost, and circumstances and in all places ; for the hard lines of truth are offered examples are not wanting to prove harshly to the eye. Half our sorrows that even in the crowded city-(witness are the breaking of different illuMr. George'sinvestigation of dry-rot,) sions : sometimes they must be brokand, still inore wonderful, in the nar- en; but when without danger to himself, or injury to others, man can en- theatre of their labors in the course rich the scene before him with ideal of the last six months. Even as one beauties, he is foolish to examine too of a trio so illustrious, if the imporminutely the objects of which it is tant results which attended his sciencomposed. The cottage, with its tific observations alone be considered, broken thatch and shining piece of Sir Humphrey Davy must be undoubtwater in the foreground, is picturesque edly regarded as preeminent. To and beautiful in a landscape ; but him the scientific world is principally what is the reality? The dwelling of indebted for its acquaintance with the misery, decorated with a horse-pond! powers and properties of the Voltaic

The splendid pageants, that dazzle the battery ; while his discoveries of solesser children at a theatre, are but dium and potassium, and the invention dirty daubs of paint and tinsel; and of the Safety-lamp, are deservedly it is the same with the stage of the class ed among the most valuable preworld. It never answers to be behind sents which philosophy erer made to the scenes. In life, I have met with art, and will not fail to transmit his but two things equal to what I fanci- name to posterity. The removal from ed them-sunrise from a mountain, amongst us of so eminent a man, and a draught of water when I was however complete his career, cannot thirsty.

fail to excite melancholy feelings. PARISIAN PERIODICALS. He died at Geneva, on the 29th of A correspondent at Paris has kindly May; and every honor was paid to his favored us with a complete list of the remains by all the residents of that periodicals published in that capital ; city in any wise distinguished either adding a detail of their objects, their in science or literature. periods of publication, prices, &c. Classing them according to their cha

LATE INSTRUCTION. racter, it appears that there issue at Socrates, in his old age, learned to present from the Parisian press, on play upon a musical instrument. subjects connected with Bibliography, Cato, aged 80, began to learn Greek; 4 journals ; Commerce, Industry, and and Plutarch, in his old age, acquired Finance, 16; Husbandry, 3; Juris Latin. John Gelida, of Valentia, in prudence, 20; Administration (cus. Spain, did not begin the study of toms, prisons, domains, &c.), 6; Mi- belles-lettres, until he was 40 years litary Science, &c., 3; Religion, 9; old.—Henry Spelman, having in his Education, 6; General Sciences, 13; youth neglected the sciences, resumed Medicine, 22; Literature, 18; Mu- them at the age of 50, with extraorsic, 5; Fashion, 2; Freemasonry, 1; dinary success.-Fairfax, after having the Lottery (!) 1-independently of been the general of the parliamentary seven annual publications, and thirty- ariny in England, went to Oxford, two daily papers. Of a truth, if the and took his degree as Doctor-of“ march of intellect” among the Gauls Law. Colbert, when minister, and keep pace with the march of letters, almost 60 years of age, returned to every other competitor must rapidly his Latin and his law, in a situation be put hors de combat. Our corres- where the neglect of one, if not pondent, however, bids us take com- both, might have been thought excufort, and allay our apprehensions ; for, sable; and Mons. Le Tellier, chansays he, « l'imagination gallope; le cellor of France, reverted to the jugement ne va que le pas !

learning of logic that he might dis

pute with his grandchildren.-Sir DEATH OF SIR HUMPHREY DAVY. John Davies, at the age of 25, pro

The name of this distinguished duced a poem on “ The Immortality philosopher, it is now certain, is to be of the Soul," and in his 62d year, as associated with those of the two other Mr. Thomas Campbell facetiously celebrated Englishmen, benefactors of observes, when a judge and a statesscience, who have departed from the man, another on dancing.

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