BREEDING HABITS OF ALBINO RAT 



301 



I n m ivv VI 



Fig. 5 Diagram showing probable development of an egg 

 through ovulation. Roman numerals I-VI indicate successive 

 ment of eggs; a-d indicate periods in oestrus cycle. Arrows 

 course of development of individual eggs. 



from resting stage 

 stages in develop- 

 indicate probable 



THE AMERICAN JOURNAL OF ANATOMY, VOL. 15, NO. 3 



