120 



THE COCKROACH 



B 



Fig. 64. Longitudinal section through Gizzard and fore-part of Chylific Stomach. 

 G, gizzard ; Tu, cpecal tube ; St, stomach ; Ep, its lining epithelium. A and B 

 are enlarged in the side figures. X 35. 



A. The Reflected Chitinogenous Layer of the Tubular Gizzard. Tr, tracheal 

 tube. X 400. 



B. One of the Tubular Extensions of the same, enclosing muscles and 

 tracheae. X 400. 



