The American Naturalist, 4. köideEssex Institute, 1871 |
From inside the book
Results 1-5 of 79
Page viii
... Length of Microscopic Objectives , p . 445 . Subsection of Microscopy of the American Association for the Advance- ment of Science , p . 571. New Form of a Binocular Microscope , p . 571 . On the Illumination of Binocular Microscopes ...
... Length of Microscopic Objectives , p . 445 . Subsection of Microscopy of the American Association for the Advance- ment of Science , p . 571. New Form of a Binocular Microscope , p . 571 . On the Illumination of Binocular Microscopes ...
Page 17
... length and near half an inch thick . The threads range from the thickness of an ordinary bristle to that of a stout darning needle . Specimens of the Hyalonema fascicle , as they have been brought to us , almost invariably present some ...
... length and near half an inch thick . The threads range from the thickness of an ordinary bristle to that of a stout darning needle . Specimens of the Hyalonema fascicle , as they have been brought to us , almost invariably present some ...
Page 22
... length . They resemble in appearance tufts of blonde human hair . The individual threads are nearly like those proceeding from the lower end of Euplectella . Where thickest they are less than the 5 of an inch in diameter , and become ...
... length . They resemble in appearance tufts of blonde human hair . The individual threads are nearly like those proceeding from the lower end of Euplectella . Where thickest they are less than the 5 of an inch in diameter , and become ...
Page 23
... length of those found near Trenton Falls is about two inches . They are quite hardy , with this exception that they cannot bear water which is much above the normal tempera- ture . In the summer time if the tank is so placed that the ...
... length of those found near Trenton Falls is about two inches . They are quite hardy , with this exception that they cannot bear water which is much above the normal tempera- ture . In the summer time if the tank is so placed that the ...
Page 26
... length and a quarter of an inch in thickness will be of use in moving the specimens into place when disarranged . Too much cannot be said against unnecessarily meddling with the specimens in the aquarium ; a slender rod with a sponge ...
... length and a quarter of an inch in thickness will be of use in moving the specimens into place when disarranged . Too much cannot be said against unnecessarily meddling with the specimens in the aquarium ; a slender rod with a sponge ...
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Common terms and phrases
abundant Academy algæ AMER American animals antennæ appear basin beautiful birds Brachiopods called channel character coast color common continent Cretaceous crustacea deposits described Devonian drift eggs Entomologist Eurypterus existence fact fauna female fish flora flowers fossil genera genus geological glacial glaciers gonidia green ground habits inches Indian insects islands known Kogia Lake larva larvæ latter leaves length less lichens Limulus living male mass mastodon maxillæ Michx microscope miocene Mountains mouth Natural History NATURALIST nearly North northern O. C. Marsh object observed organs peculiar plants pliocene portion present Prinus probably Professor Pterygotus pupa region remains remarkable river rocks sand Science seen shell shore side similar southern species specimens sponge stone streams surface tendril Tertiary tion trees trilobite valley variety vegetable W. H. DALL winter young
Popular passages
Page 363 - SKETCHES OF CREATION. Sketches of Creation: a Popular View of some of the Grand Conclusions of the Sciences in reference to the History of Matter and of Life. Together with a Statement of the Intimations of Science respecting the Primordial Condition and the Ultimate Destiny of the Earth and the Solar System. By ALEXANDER WINCHELL, LL.D., Professor of Geology, Zoology, and Botany in the University of Michigan, and Director of the State Geological Survey.
Page 577 - These are the gardens of the desert, these The unshorn fields, boundless and beautiful, For which the speech of England has no name — The prairies. I behold them for the first, And my heart swells, while the dilated sight Takes in the encircling vastness.
Page 421 - Every species has come into existence coincident both in time and space with a pre-existing closely allied species" connects together and renders intelligible a vast number of independent and hitherto unexplained facts.
Page 48 - ... Admitting to the full as highly probable, though not completely demonstrated, the applicability to living beings of the laws which have been ascertained with reference to dead matter, I feel constrained at the same time to admit the existence of a mysterious something lying beyond, a something sui generis, which I regard, not as balancing and. suspending the ordinary physical laws, but as working with them and through them to the attainment of a designed end. What this something which we call...
Page 82 - ... and I was convinced, at the period he predicted, of the old fellow's knowledge of his business. The first hare seized by the falcon was very strong, and the ground rough. While the bird kept the claws of one foot fastened in the back of its prey, the other was dragged along the ground till it had an opportunity to lay hold of a tuft of grass, by which it was enabled to stop the course of the hare, whose efforts to escape, I do think, would have torn the hawk asunder, if it had not been provided...
Page 126 - Bogle measured a fallen tree of Eucalyptus Amygdalina, in the deep recesses of Dandenong, and obtained for it the length of 420 feet, with proportions of width, indicated in a design of a monumental structure placed in the Exhibition ; while Mr. G-. Klein took the measurement of a eucalyptus on the Black Spur, ten miles distant from Healesville, 480 feet high ! Mr.
Page 423 - ... he had not yet acquired that wonderfully developed brain, the organ of the mind, which now, even in his lowest examples, raises him far above the highest brutes ; — at a period when he had the form but hardly the nature of man, when he neither possessed human speech, nor those sympathetic and moral feelings which in a greater or less degree everywhere now distinguish the race.
Page 361 - The valleys which furrow the flank of Chimborazo are in keeping with its colossal size. Narrower, but deeper than those of the Alps, the mind swoons and sinks in the effort to comprehend their grim majesty. The mountain appears to have been broken to pieces like so much thin crust, and the strata thrown on their vertical edges, revealing deep, dark chasms, that seem to lead to the confines of the lower world. The deepest valley in Europe, that of the Ordesa in the Pyrenees, is...
Page 60 - Hypsilophodon, from the character of its teeth, probably subsisted on hard vegetable food. He expressed a hope that Mr. Fox would allow a closer examination of his specimens to be made. He was unable to agree with Mr. Seeley's views. He was inclined to think that the progress of knowledge tended rather to break down the lines of demarcation between groups supposed to be distinct than to authorize the creation of fresh divisions.
Page 196 - ... 2d. Some of the valleys and channels which bear the marks of glacial action — evidently formed or modified by ice, and dating from the ice period or an earlier epoch — are excavated far below the present lakes and water-courses which occupy them. These valleys form a connected system of drainage, at a lower level than the present river system, and lower than could be produced without a continental elevation of several hundred feet.