ITS NERVOUS SYSTEM AND SENSE ORGANS. 



97 



10 



7TL 



-in 



Fig. 48. Diagrammatic outlines of sections of the Brain of a Cockroach. Only one 

 side of the brain is here represented. The numbers indicate the position in the 

 series of thirty-four sections into which this brain was cut. al, antennary lobe; 

 'nib, mushroom bodies (calices), with their cellular covering, c, and their stems 

 (peduncles), st; a, anterior nervous mass (cauliculus) ; m, median nervous mass 

 (trabecula). From E. T. Newton. 



H 



