350 
PROFESSOR ARTHUR ROBINSON ON 
Table IX. — Ferrets and Ferret-Polecat Hybrids Inseminated at the First (Estrus oe the Season. 
Time of Death after Insemination over 72 and under 97 hours. 
Specimen. 
Weight in 
Ounces. 
Number of 
Hours after 
Insemination. 
Date 
of 
Death. 
Size of 
Ovary 
in mm. 3 
Size of 
largest 
Follicle 
in mm. 3 
Number of 
Follicles 
of largest 
size. 
Notes. 
1. F.D.A. 44/15 R. FI. \ . 
2. „ „ L.Mx. / . 
13-J 
74 
19/6/15 
33-239 808 000 
20-528 640 000 
2-078 600 000 
1-980 576 000 
3 all normal 
4 „ 
The ova were in the middle third of the 
oviduct, some in the 3-, some in the 
4-cell stage. 
The ruptured follicles were distended. 
In the right ovary were four degenerate 
follicles of -315 872 000 mm. 3 
In the left ovary was one follicle of 
degenerate epithelium, and with an 
ovum in the first polar body stage. 
The follicle measured -886 356 000 
, mm. 3 
3. F.G.A. 7/15 R.Z. \ . 
4. „ „ L.F1. / . 
15 
76 
4/5/15 
30-840 328 800 
39-180 625 000 
3-036 217 400 
3-045 168 000 
8 
8 
'The ova were in the uterus, some in the 
1-, some in the 2-, and one in the 
4-cell stage, and all were degenerate. 
In the right ovary Were three un- 
ruptured degenerate follicles of 
•173 880 000 mm. 3 
In the left ovary Were four un- 
ruptured degenerate follicles of 
■090 248 000 mm. 3 
.The ruptured follicles were distended. 
5. P.D.A. 5/15 R.Per. \ . 
6. „ „ L.F1. / . 
20-! 
'76J 
22/4/15 
21-356 055 000 
29-804 709 375 
•607 500 000 
•665 280 000 
3 
7 
'The ova Were in the middle third of 
the oviduct in the stage of fusing 
pronuclei. 
The ruptured follicles Were not dis- 
tended. 
- In the right ovary was one un- 
ruptured degenerate follicle of 
■186 263 600 mm. 3 
In the left ovary were four un- 
ruptured degenerate follicles of 
-077 760 000 mm. 3 
7. F. 1 27-28/08 Z. \ 
8. F. 1-1 29-30/08 Mann. / 
93-4 
5/4/08 
29-204 331 250 
16-334 156 250 
1-451 980 800 
1-136 851 200 
3 
'The ova Were in the lower part of the 
middle third of the oviduct, some in 
the 7-, some in the 8-, and some in 
the 9-cell stage. 
The ruptured follicles were distended, 
and there were signs of lutein 
formation. 
< In the right ovary were four normal 
unruptured follicles of -269 892 000 
mm. 3 
In the left ovary were three normal 
unruptured follicles of -140 61-6 000 
mm. 3 
The sides to Which the ovaries be- 
longed is uncertain. 
9. F. 1-2 31-34/08 Mann. 'j 
10. F. 1-3 35-37/08 Z. J 
” 
” 
” 
48-129 900 000 
56-772 000 000 
1- 932 096 000 
2- 938 328 000 
C 8 normal 
4 3degener- 
( ate 
3 all normal 
'The follicles were unruptured, and 
contained ova either in the first 
spindle stage • or the first polar 
body stage. 
In addition ovary 3 1-34 contained three 
degenerate follicles of -184 680 000 
mm. 3 , and the ovary 35-37 contained 
twelve degenerate follicles of 
•200 250 000 mm. 3 
The sides to which the ovaries be- 
longed is uncertain. 
