The American Naturalist, Volumen21Essex Institute, 1887 |
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Página 606
... close together that he soon concludes they must take more or less moisture and nutriment from each other ; he will find the roots so crowded and matted together that the soil is a mass of them ; that here one plant has fastened itself ...
... close together that he soon concludes they must take more or less moisture and nutriment from each other ; he will find the roots so crowded and matted together that the soil is a mass of them ; that here one plant has fastened itself ...
Página 609
... so that the edges are close together . In swollen sacs on each side of the slit the pollen - grains. FIG . 1. - Flower of Asclepias enlarged . FIG 6. - Leg of beetle , with pollinia attached. 1887 ] 609 The Milkweeds .
... so that the edges are close together . In swollen sacs on each side of the slit the pollen - grains. FIG . 1. - Flower of Asclepias enlarged . FIG 6. - Leg of beetle , with pollinia attached. 1887 ] 609 The Milkweeds .
Página 610
... a comparatively short space of time the appendages begin to twist , and then the pollen - masses are brought close together ; not , however , before the insect to which they are attached has had time to fly to. 610 [ July The Milkweeds .
... a comparatively short space of time the appendages begin to twist , and then the pollen - masses are brought close together ; not , however , before the insect to which they are attached has had time to fly to. 610 [ July The Milkweeds .
Página 612
... close together . In both cases . the pollen - grains are only then in a position to reach the stigma . Darwin has demonstrated that the contraction of the caudicle of the Orchid pol- linium is necessary to prevent its being put back ...
... close together . In both cases . the pollen - grains are only then in a position to reach the stigma . Darwin has demonstrated that the contraction of the caudicle of the Orchid pol- linium is necessary to prevent its being put back ...
Página 658
... close allies ( one of which , Pliolophus vulpiceps , is thought by Lydekker to be identical with it ) to be undoubted Perisso- dactyla . I refer here to the fact that Schlosser regards Hyraco- therium as one of the Equine family ...
... close allies ( one of which , Pliolophus vulpiceps , is thought by Lydekker to be identical with it ) to be undoubted Perisso- dactyla . I refer here to the fact that Schlosser regards Hyraco- therium as one of the Equine family ...
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Términos y frases comunes
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