PLATE 11 
EXPLANATION OF FIGURES 
23 Ovary and third segment of oviduct of late stage Mz animal. X 501. 
In upper left field are three ova bunched in the last segment of the oviduct. Of 
the three corpora lutea included in this field, the two at the left surface of the 
ovary correspond to the ova in the tubes, the one in the lower right field to the 
second oestrus recorded before death. They are easily distinguished by staining 
reaction not brought out in the photograph. The ages of these were estimated 
at three and nine to ten days, respectively. 
24 Two corpcra lutea representing follicles which ruptured at the first and 
third Operiods before death. 58. That to left stains blue and shows “‘bleed- 
ing into the central cavity.’”’ That to the right has a pink tinge, is ‘corded,’ 
and deeply placed. Ages are estimated at three and fourteen days, respectively. 
O2 
SI 
oO 
