The American Naturalist, Volumen30Essex Institute, 1896 |
Dentro del libro
Resultados 1-5 de 77
Página 11
... latter , they would be successively lost . To what power shall we ascribe this acceleration by which the first beginnings of structure have accumulated to themselves through the long geologic ages , complication and power , till from ...
... latter , they would be successively lost . To what power shall we ascribe this acceleration by which the first beginnings of structure have accumulated to themselves through the long geologic ages , complication and power , till from ...
Página 13
... latter as " ontogenetische Acceleration , " using exactly the ad- jective applied in this country many years beforehand , but that fact does not seem to have been considered worthy of his attention . Haeckel then proceeds to add : " Das ...
... latter as " ontogenetische Acceleration , " using exactly the ad- jective applied in this country many years beforehand , but that fact does not seem to have been considered worthy of his attention . Haeckel then proceeds to add : " Das ...
Página 46
... latter rock . They moreover , contain but one generation of hornblende , corresponding to the second generation in the typical rock , and but few well developed augite phenocrysts , although this mineral is found in two generations . A ...
... latter rock . They moreover , contain but one generation of hornblende , corresponding to the second generation in the typical rock , and but few well developed augite phenocrysts , although this mineral is found in two generations . A ...
Página 49
... latter skeleton there is also most of the skull . This makes it possible to correlate the skull with the skeletons and give the measurements of the species . The skull is short and high in the frontal region , the orbit horizontally ...
... latter skeleton there is also most of the skull . This makes it possible to correlate the skull with the skeletons and give the measurements of the species . The skull is short and high in the frontal region , the orbit horizontally ...
Página 55
... latter was enclosed in the central disc , and this was surrounded by a verticil of vesicles , the gonangia , which produced the sicula . Below the verticil of gon- angia and suspended from the funicle was the tuft of stipes . It is ...
... latter was enclosed in the central disc , and this was surrounded by a verticil of vesicles , the gonangia , which produced the sicula . Below the verticil of gon- angia and suspended from the funicle was the tuft of stipes . It is ...
Otras ediciones - Ver todas
Términos y frases comunes
acid adaptations Amer American animals appear augite bacteria beds beets birds bones Botany Bull cells characters cleavage color containing Cope crystals described diabases Diplopoda disease eggs embryo Eocene evidence evolution experiments Extr fact fauna fishes formation fossil gabbro gastrula gelatine genera genus Geol Geological gneisses heredity hornblende Hyracotherium IIBr insects Journ known Lacertilia larvæ latter length limestone lower mass ment method molars movements Museum mushroom bodies natural NATURALIST North observed occur organism original orthoclase Paleontology paper paroccipital phenocrysts plagioclase plants plates porphyritic premolar present probably Prof Professor protoplasm quartz recent referred region relation rocks Science segment selection skull species specimens spores sporophylls squamosal stage stain stem structure subspecies substance surface tail tion tissues University upper variations vegetative vessels xylem
Pasajes populares
Página 331 - KOREAN GAMES: WITH NOTES ON THE CORRESPONDING GAMES OF CHINA AND JAPAN, Stewart Culin.
Página 878 - Its power of inducing fermentation in a solution of sugar was entirely destroyed, although no perceptible change in the appearance of the yeast cells could be detected under the microscope. This experiment was repeated several times, and always with the same result, although when the yeast was simply washed in water it readily induced fermentation.
Página 182 - Consequently, if the theory be true, it is indisputable that before the lowest Cambrian stratum was deposited, long periods elapsed, as long as, or probably far longer than, the whole interval from the Cambrian age to the present day; and that during these vast periods the world swarmed with living creatures.
Página 818 - With this, the priest disappeared. I awoke at once and immediately told my wife the dream that I might not forget it. Next morning — Sunday — I examined the fragments once more in the light of these disclosures, and to my astonishment found all the details of the dream precisely verified in so far as the means of verification were in my hands. The original inscription on the votive cylinder read: "To the god Ninib, son of Bel, his lord, has Kurigalzu, pontifex of Bel, presented this.
Página 827 - Assistant Secretary of the Smithsonian Institution and Director of the National Museum, died in Washington, Sept.
Página 643 - ... 3. They show no intimate association in areal distribution with the blue limestone, nor any tendency to grade into it." " 4. The metamorphic changes to which the white limestones have been subjected are general in their nature, and...
Página 525 - With the opposite (withdrawing, depressive affects) in injurious and painful conditions. ments) — but by the reinstatement of it by a discharge of the energies of the organism, concentrated as far as may be for the excessive stimulation of the organs (muscles, etc.) most nearly fitted by former habit to get this stimulation again (in which the " stimulation " stands for the condition favorable to adaptation).
Página 952 - We must therefore picture to ourselves a fertile plain occupying the whole of the Bristol Channel, and supporting herds of reindeer, horses, and bisons, many elephants and rhinoceroses, and now and then being traversed by a stray hippopotamus, which would afford abundant prey to the lions, bears, and hyaenas, inhabiting all the accessible caves, as well as to their great enemy and destroyer, man."* III.
Página 416 - heightened discharge " are capable of formulation of the principle of " motor excess " : " the accommodation of an organism to a new stimulation is secured — not by the selection of this stimulation beforehand (nor of the necessary movements) — but by the reinstatement of it by a discharge of the energies of the organism, concentrated, as far as may be, for the excessive stimulation of the organs (muscles, etc.), most nearly fitted by former habit to get this stimulation again," '' in which...
Página 495 - ... on the way to Pawtucket; he wanted to get away somewhere — he didn't know where — and have rest. He had six or seven hundred dollars with him when he went into the store. He lived very closely, boarded by himself, and did his own cooking. He went to church, and also to one prayer-meeting. At one of these meetings he spoke about a boy who had kneeled down and prayed in the midst of the passengers on a steamboat from Albany to New York [an incident of which he was well aware in the Ansel Bourne...