Alpenblumen ihre Befruchtung durch Insekten und ihre Anpassungen au dieselben

Abstract

THE naturalist who studies animals or plants in a state of nature must often wish that he could test his conclusions experimentally by varying the conditions under which a given set of facts are observed. He wishes that he could change the food of a group of organisms, or the climate to which they were exposed, or that he could diminish the numbers of one sub-group while those of another were increased. As he cannot do this he is obliged to be content with treating the facts within his grasp in the spirit of an experimentalist, by comparing large classes of facts as they occur under different conditions.

Alpenblumen ihre Befruchtung durch Insekten und ihre Anpassungen au dieselben.

Von Dr. Herman Müller, Oberlehrer an der Realschule 1. Ordnung zu Lippstadt. 8vo, 611 pp. (Leipzig: W. Engelmann, 1881.)

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DARWIN, F. Alpenblumen ihre Befruchtung durch Insekten und ihre Anpassungen au dieselben . Nature 23, 333–335 (1881). https://doi.org/10.1038/023333a0

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