๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

THE STRUCTURE OF INSECTS IN RELATION TO RECENT VIEWS ON THE ORIGIN OF THE VERTEBRATES


Book ID
123594309
Publisher
The Lancet
Year
1891
Tongue
English
Weight
425 KB
Volume
137
Category
Article
ISSN
0140-6736

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## Abstract Reviews the question of the origin of the midgut of insects with its diverse appearances and interpretations. Without doubt the midgut epithelium in some insects is derived from the lower layer, but in other insects from the tips of the stomodaeal and proctodaeal invaginations. The ques