OVARIAN FOLLICLES IN FERRETS AND FERRET-POLECAT HYBRIDS. 355 
Table XII. — Ferrets Inseminated at Second (Estrus. 
Specimen. 
Weight in 
Ounces. 
Number of 
Hours after 
Insemination. 
Number of Days 
Post-partum or 
Post-abortion. 
Date 
of 
Death. 
Size of 
Ovary 
in mm. 3 
Size of 
largest 
Follicle 
in mm. 3 
Number of 
Follicles 
of largest 
size. 
1. F.D.A. 39/15 R.Z. \ 
16 
24 
22 
30/4/15 
21-441 024 000 
2-105 064 000 
3 all normal 
2. „ „ L.F1. / 
36-824 470 000 
1-819 584 000 
6 
3. F. 6-9/08 Z. \ 
? 
43-J- 
23/5/08 
24-178 500 000 
•720 824 000 
4 
4. F. 10-11/08 Mann. / 
17-227 000 000 
•628 560 000 
8 
5. F. 18-19/08 R. Mann. \ 
65i- 
35-709 375 000 
2-046 179 200 
5 
6. 20-21/08 L.Z. / 
25-100 000 000 
1-645 712 640 
4 
7. F.G.A. 11/15 R.Z. \ 
13f 
69 
31/5/15 
27-845 141 060 
1-550 016 000 
3 
8 L.F1. / 
34-166 643 600 
1-144 044 000 
4 
Ova of second pregnancy in first 
polar body stage. 
Young of first pregnancy Were 
cast on May 8, 1915. The 
animal was in full heat on May 
29, 1915, and Was killed after 
insemination on May 30, 1915. 
The side to which the ovaries 
belong is uncertain. 
The ova in both cases Were in the 
middle third of the oviduct in 
the first polar body stage. 
/ Some were fertilised, others 
were not fertilised. 
In ovary 3 there were seven old 
corpora lutea. 
In ovary 4 there Were two old 
^ corpora lutea. 
/'The ova Were in the lower part 
of the middle third of the ovi- 
duct, some in the 7- and others 
in the 9 -cell stage. 
In the right ovary there Were 
two large unruptured follicles, 
one of -894 240 000 mm. 3 , one 
i of 1-272 290 000 mm. 3 , both 
I With ova in the first polar body 
J stage. 
In the left ovary there Was one 
follicle of 1-089 849 600 mm. 3 
With ovum in first spindle 
stage, and one follicle of 
■406 378 000 mm. 3 with unripe 
ovum. 
The ruptured follicles were 
closed and distended. 
Four corpora lutea of previous 
pregnancy were present in 
each ovary. 
/'The ova were in the middle third 
I of the oviduct ; two of those 
I on the right side were in the 
4 -cell stage and one in the 
I 3 -cell stage. On the left side 
j three were in the 4-cell stage 
and one in the 2-cell stage. 
I In the right ovary there were 
four unruptured follicles of 
I -087 768 000 mm. 3 , of which 
| three were degenerate. 
In the left ovary there were 
five unruptured follicles of 
■251 164 800 mm. 3 , of which 
four were degenerate. 
The ruptured follicles were 
partially distended. 
In the right ovary four corpora 
lutea of the previous preg- 
nancy. 
In the left ovary seven corpora 
lutea of the previous preg- 
nancy. 
