in Great Britain LIMITED PERMEABILITY AND METABOLISM OF

The process of intestinal absorption in insects, despite its central importance in the physiology of these animals, has been subjected to only a few studies. Treherne (1957, 19580-^, 1959) demonstrated that absorption of certain sugars, fats, and amino acids occurs primarily in the midgut caeca of Periplaneta and Schistocerca. The forc