Publisher's Synopsis
Excerpt from The Entomologist's Record and Journal of Variation
It must be borne in mind that these inconclusive experiments were neither expected, nor intended' to produce a final conclusion; all that was contemplated was by elementary experiment to find the Optimum conditions for breeding variations. SO far, apart from examples with a certain amount Of bleaching or a deficiency Of scaling or a colour change probably due to a chemical condition in the environment, the chances of Obtaining extreme variations by temperature variations seem almost as remote as the chance one might expect from a batch Of wild larvae bred under normal conditions unless one is fortunate enough to collect a brood in which a mutant gene is already functioning.
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