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By V. B. Wigglesworth C.B.E., M.D., F.R.S. (auth.)

INSECTS offer an excellent medium within which to review all of the difficulties of body structure. but when this medium is for use to the simplest virtue, the foundations and peculiarities of the insect's association has to be first preferred. it's the objective of this booklet to set forth those ideas as far as they're understood at present day. There already exist many glorious text-books of normal ento­ mology; particularly these of Imms, Weber, and Snodgrass, to say merely the newer. yet those authors have unavoidably been preoccupied mainly with describing the range of shape between bugs; discussions on functionality being correspondingly condensed. within the current paintings the emphasis is reversed. Struc­ ture is defined in simple terms to an volume enough to make the physiological argument intelligible. each anatomical peculiarity, each ecological specialization, has certainly its physiological counterpart. In that feel, anatomy, body structure and ecology are usually not separable. yet seemed from the viewpoint from which the current paintings is written, the unending ameliorations which are met with between bugs are yet illustrations of the final ideas in their body structure, which it's the objective of this ebook to set forth. Completeness in this sort of paintings isn't attainable, or fascinating; yet an endeavour has been made to demonstrate every one physiological attribute via a couple of concrete examples, and to incorporate adequate references to steer the scholar to the extra very important resources. The body structure of bugs is to a few the handmaid of financial Entomology.

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