The American Naturalist, Volumen28

Portada
Essex Institute, 1894
 

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Contenido

NeoLamarckism and NeoDarwinism L H Bailey
661
Ornithophilous Pollination Illustrated J L Hancock
679
The Origin of the Subterranean Fauna of North America Illustrated A
727
The Numerical Intensity of Fauna L P Gratacap
752
The Development of the Wing of Sterna wilsonii Illustrated V J Leigh
761
A Littleknown Jamaican Naturalist Dr Anthony Robinson T D A Cock
775
fTHE Origin of the Subterranean Fauna of of DakotaLower Eocene Mammals near
793
Bagworm 443
801
Anthony Robinson T D A CockrrelL 775 NebraskaBotany at Brooklyn
803
tower Cretaceous Fossilsfrorn the Black Hills Scientific News
830
The Classification of Snakes Illustrated E D Cope 431
845
Abalone or Haliotis Shells of the Califdmia Coast M B Williamson
849
The Duration of Niagara Falls Dr J W Spencer
859
Chicago Exposition 249
872
The Mechanical Cause of Folds in the Aperture of the Shells of Gasteropoda
909
Some Birds of Paradise from New Guinea Illustrated G S Mead
915
The Psychology of Hypnotism Jas Weir M D
921
Rules of Nomenclature Adopted by the International Zoological Congress
929
Basic Rocks of the Adirondacks
947
Psychology The Recidivist 537 Muiualists 713 The Habit of Amusement
966
Microscopy Orienting Small Objects for Sectioning and Fixing them
977
Quaternary Time Divisible in Three PeriodsThe Lafayette Glacial
978
The Homologies of the Uredineae Tbe Rusts Illustrated C E Bessey
989
On the Evolution of the Art of Working in Stone A Preliminary Paper by
997
Zoology in the High School C M Weed
1003
Editorials The Languages in Science 38 Philadelphia and the Chicago
1013
Geology and Paleontology A Food Habit of the Plesiosarus 50 The Texas
1023
Mineralogy and Petrography The Granite of Santa Lucia California
1029
Botany Ellis and Everharts North American Fungi 63 A Synopsis
1034

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Página 364 - Printing-House, between the hours of ten in the morning and two in the afternoon, to preach eight Divinity Lecture Sermons, the year following, at St.
Página 663 - Can it, then, be thought improbable, seeing that variations useful to man have undoubtedly occurred, that other variations useful in some way to each being in the great and complex battle of life, should sometimes occur in the course of thousands of generations...
Página 988 - Mackintosh as proof that a period of not more than 6000 years has elapsed since the boulders were left in their positions. The vertical extent of this denudation, averaging about six inches, is nearly the same with that observed in the southwest part of the Province of Quebec by Sir William Logan and Dr. Robert Bell, where veins of quartz marked with glacial strife stand out to various heights not exceeding one foot above the weathered surface of the enclosing limestone.
Página 663 - On the other hand, we may feel sure that any variation in the least degree injurious would be rigidly destroyed. This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest...
Página 552 - for the advancement and prosecution of scientific research in its broadest sense," now amounts to $25,000. As the income is already available, the trustees desire to receive applications for appropriations in aid of scientific work. This endowment is not for the benefit of any one department of science, but it is the intention of the trustees to give the preference to those investigations...
Página 204 - A member of the Anthropological Society of Washington "has placed in the hands of the Treasurer of the Society a "sum of money to be awarded in prizes for the clearest "statements of the elements that go to make up the most "useful citizen of the United States, regardless of occupation.
Página 783 - Congress. 501 Books, maps, music, engravings, photographs, etchings, bound or unbound, and charts which shall have been printed more than twenty years at the date of importation, and all hydrographic charts and publications issued for their subscribers, or exchanges by scientific and literary associations or academies, or publications of individuals for gratuitous private circulation, and public documents issued by foreign governments.
Página 924 - ... which strikes our senses. At the same time they are compelled to add, since it is an important observation, that the contact and repeated excitement of the imagination which produce the crises may become hurtful ; that the spectacle of these crises is likewise dangerous on account of the imitative faculty which is a law of nature, and consequently that all treatment in public in which magnetism is employed must, in the end, be productive of evil results.
Página 983 - Tertiary periods at lower altitudes, and its surface was largely enveloped by residual clays and by alluvial sand and gravel. With the elevation of the continent, increased rainfall and snowfall and resulting river floods swept away these superficial materials from the higher lands and spread them on the coastal plain and along the Mississippi valley, where the streams expanded over broad areas with shallow and slackened currents. As the elevation increased, however, the rivers would attain steeper...

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