IL 



A COXl^RIHUTION 



Insect Embryology 



AN JXArCURAL DISSERTATION 



KOK THE 



i)K(;rkk of doctor of philosophy, 



1 RESENTED TO THE 



FACULTY OP^ CLARK UNIVERSITY. 

 May JO, J8g2. 



WILLIAM MORTON WHEELER. 



Reprinted from JOURNAL OF MORPHOLOGY, Vol. VIII., No. t. 



BOSTON : 

 QINN & CONIPANY. 



1893. 





:Jti^ 



