Science, Том 72John Michels (Journalist) American Association for the Advancement of Science, 1883 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Стр. 179
... land plants are descended . One of these classes , the Chlorophyceae , have the chloro- phyll unmixed with other pigments , and probably represent the nearest approach to the lower land plants , since the latter have much the same cell ...
... land plants are descended . One of these classes , the Chlorophyceae , have the chloro- phyll unmixed with other pigments , and probably represent the nearest approach to the lower land plants , since the latter have much the same cell ...
Стр. 180
... land by the algal ances- tors of the higher plants must be regarded as perhaps the most momentous event in the history of the plant kingdom . In the comparatively uniform environment of aquatic life there is much less scope for ...
... land by the algal ances- tors of the higher plants must be regarded as perhaps the most momentous event in the history of the plant kingdom . In the comparatively uniform environment of aquatic life there is much less scope for ...
Стр. 441
... land about the Arctic Basin has a mean summer temperature above freezing and the ground may thaw a few inches in a very few days . There are over four hundred flowering plants , some of them luxuriant . Past land connections have been ...
... land about the Arctic Basin has a mean summer temperature above freezing and the ground may thaw a few inches in a very few days . There are over four hundred flowering plants , some of them luxuriant . Past land connections have been ...
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B Mosquito Vectors of Experimental Yellow | 1 |
Polar Exploration I BowMAN 439 | 13 |
Sudan III Behavior of E H MACARTHUR | 14 |
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