The American Naturalist, Volumen21Essex Institute, 1887 |
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Página 606
... course of which the fittest will survive . In other words , that plant or animal will be the most likely to live and continue to propagate its species which can best succeed in crowding out . some of its competitors , and in taking the ...
... course of which the fittest will survive . In other words , that plant or animal will be the most likely to live and continue to propagate its species which can best succeed in crowding out . some of its competitors , and in taking the ...
Página 607
these claws have been acquired in the course of ages , being developed more and more fully as time went on . Neither can there be any doubt but that they are now necessary for his existence . So it is with all other weapons of defence ...
these claws have been acquired in the course of ages , being developed more and more fully as time went on . Neither can there be any doubt but that they are now necessary for his existence . So it is with all other weapons of defence ...
Página 632
... course of the discussion of the variation of different parts of the bone . Length . In the one hundred and thirteen Caucasians , all adults , the mean length is 16.22 cm . , the extremes being 13.2 and 20.1 . There are six under 14 cm ...
... course of the discussion of the variation of different parts of the bone . Length . In the one hundred and thirteen Caucasians , all adults , the mean length is 16.22 cm . , the extremes being 13.2 and 20.1 . There are six under 14 cm ...
Página 634
... course a scapular index decidedly different from the one it would have if the posterior and superior borders had been prolonged till they met in a sharp point . The differences in depth of the supra - scapular notch , which ranges from ...
... course a scapular index decidedly different from the one it would have if the posterior and superior borders had been prolonged till they met in a sharp point . The differences in depth of the supra - scapular notch , which ranges from ...
Página 635
... course of the spine and acromion deserve attention . By comparing the scapular and infra - spinous indices we get some idea of its obliquity . A high infra - spinous index with a moderate scapular index shows , of course , a greater ...
... course of the spine and acromion deserve attention . By comparing the scapular and infra - spinous indices we get some idea of its obliquity . A high infra - spinous index with a moderate scapular index shows , of course , a greater ...
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Amer AMERICAN NATURALIST animals appear Artiodactyla Bering Island bones botany breed called cells character chemical color compounds conclusions Condylarthra contains crystals cusps described dike E. D. Cope Eocene evolution eyes facts fauna feet figures fossils four Gard genera genus geological geologists geology Göhrde groups Heptodon hornblende hornless stags horns hundred Hyracotherium Ichthyosaurus incisors inferior molar infra-spinous insects Island J. B. LIPPINCOTT COMPANY known Lambdotherium larvæ lower Menodus mineral Miocene molars natural North notes observed occur original paper Philadelphia plane plants plates polled cattle pollinia portion premolars present probably Proc Prof Professor Protohippus published recently region represented River rocks sandstone says scapular scapular index schists scientific sea-cow sections seen side skull species specimens Spiders structure student superior molars synonymy Taconic teeth tion varieties Vilmorin XXI.-NO