17 



of impregnatic . ' ain two lots c 



in l.^" 1 ^ were . the 



- to sixteen-celle. . . In one lot, however, th 



was fou.n; i lack eyes and 



other s in which the blastoderms covered. one-half, 



- ourth, of the circumference of the egg. These 

 Lots of e the si ells, and 



the st Ln masses as t 



from the pouch. Tims all chance of s havin been 



lot of eggs put up i 

 were found to he in t 

 them were found two embryos with pector i . , 



It is true that in opposite end! s of 



c iffe rent yingi ^differ 



hut n in differences of age more than thirty- six hours 



against about . s in the a iove cases, 



these facts I can ; one conclusion, t the time 



of coition both spermatozoa and ova are simultaneously 



, and, as the female e her oviduct from 



buttonhoi - i irsupiurn, on 



L l, into the ovary anci t 

 fertilize eggs. i; l] occasionally, ut it 



a str i . 



fertilization. 



