The American Naturalist, Volumen21Essex Institute, 1887 |
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Página 605
... plant ? While the herbage all around will be closely cropped , often not a blade of grass left more than half an inch ... plants of the field ? In this , as in other cases , the common name tells the story ; but it does not tell why the ...
... plant ? While the herbage all around will be closely cropped , often not a blade of grass left more than half an inch ... plants of the field ? In this , as in other cases , the common name tells the story ; but it does not tell why the ...
Página 606
... plant devouring another in a literal sense ; but he will find one sort of tree crowding and pushing another , or overshadowing smaller plants so that they cannot live ; he will see them in the fields so close together that he soon ...
... plant devouring another in a literal sense ; but he will find one sort of tree crowding and pushing another , or overshadowing smaller plants so that they cannot live ; he will see them in the fields so close together that he soon ...
Página 607
... plants so they can hold their ground in the battle for life ; and , conse- quently , those species best provided with means to resist the attacks of animals , either by being more unpalatable through disagreeable odors or tastes , or by ...
... plants so they can hold their ground in the battle for life ; and , conse- quently , those species best provided with means to resist the attacks of animals , either by being more unpalatable through disagreeable odors or tastes , or by ...
Página 608
... plants . The reason for its dominance is no other than the possession of its sticky , milky juice . The sap of plants , though varying in different species , serves the same purpose in all . While primarily it is useful in one way ...
... plants . The reason for its dominance is no other than the possession of its sticky , milky juice . The sap of plants , though varying in different species , serves the same purpose in all . While primarily it is useful in one way ...
Página 609
... plants will then have an ex- cellent chance of perfecting seed . Even during a season when plant - life must struggle for water , and when herbivorous animals greedily devour everything they can find , the milky - juiced plant will ...
... plants will then have an ex- cellent chance of perfecting seed . Even during a season when plant - life must struggle for water , and when herbivorous animals greedily devour everything they can find , the milky - juiced plant will ...
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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