Translations:Manfred Klett: Von der Agrartechnologie zur Landbaukunst/392/en

It is the reciprocal relationship to warmth that, in the bodily structure of insects, equalises the one-sidednesses attaching to invertebrates, fish and birds. The three functional domains of head, thorax and metabolism are, in the insect as regards bodily form, as a rule more equally developed, with particular emphasis on the middle member (thorax) — indeed they are in many cases sharply demarcated from one another by incisions (insect from Latin

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