3S 



TRANSFORMATIONS OF INSECTS. 



these formerly separate ganglions are united, and form a bulky 

 mass in the middle of the thorax. Nevertheless, the points of 



IHE NERVOUS SYSTEM OF THE SILK- 

 WORM MOTH (Magnified). 



THE NERVOUS SYSTEM OF THE SILK- 

 WORM CATERPILLAR (Magnified). 



union may be detected by unusual care. The connecting cord? 

 are, however, lost. 



