ITS NERVOUS SYSTEM AND SENSE ORGANS. 



91 



the peripheral fibres, some are believed to pass direct to their 

 place of distribution, while others traverse at least one complete 

 segment and the corresponding ganglion before separating from 

 the cord. 



^-iVTTv * --~ V . -i <\ 



Fig. 43.- Longitudinal horizontal section of Third Thoracic Ganglion, n, peripheral 

 nerves. The other references as before. X 75. 



Many familiar observations show that the ganglia of an 

 Insect possess great physiological independence. The limbs of 

 decapitated Insects, and even isolated segments, provided that 

 they contain uninjured ganglia, exhibit unmistakable signs of 

 life. 



