By W. T. Hillier
This booklet consists of 7 chapters and starts off with an advent to a thought of animal formation, specifically, the idea of twin structure. This concept hypothesize that if new sorts of animal come up during the fusion of 2 animals of numerous sort, then one should locate one of the contributors of the animal nation a few varieties that can be referred to as style Animals. of those variety animals are thought of, the archi-annelid Polygordius and the herring (Clupea harengus). the ultimate chapters describe the theoretical points in their skeleton and bones.
This publication is of worth to zoologists, theorists, and researchers within the allied fields.
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A Theory of the Formation of Animals by W. T. Hillier