Abstract
THIS book forms a continuation of the researches which in vol. i. treated of the season dimorphism as the result partly of exterior influences and partly of atavism. The present (second) volume comprises: (1) the origin of the markings upon caterpillars; (2) on the phyletic parallelism in meta-morphous species; (3) on the transformation of the Mexican Axolotl into an Amblystoma; (4) on the mechanical conception of nature. The third treatise was published separately some time ago and was reviewed in NATURE; here we particularly wish to draw the attention of the lovers of natural science to the first paper. Weismann tries in the treatise in question to prove by his observations, and the deductions therefrom, that exterior influences and natural development or adaptation (Naturzuechtung) only can be the causes of the markings upon caterpillars. The observations referred to were made upon the caterpillars of several genera of Sphingidæ, and relate to the history of their development.
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Science in Germany 1 . Nature 15, 451–452 (1877). https://doi.org/10.1038/015451b0
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DOI: https://doi.org/10.1038/015451b0