344 
PROFESSOR ARTHUR ROBINSON ON 
Table VI. — Ferrets and Ferret-Polecat Hybrids Inseminated at First (Estrus op Season. 
Time op Death apter Insemination not more than 24 hours. 
Specimen. 
^ O 
bJD £ 
*5 0 
° | -2 
rO ^ .S 
a ^ g 
Date 
of 
Size of 
Ovary 
in mm. 3 
Size of 
largest 
Follicle 
Number of 
Follicles 
of largest 
Notes. 
in mm. 3 
size. 
1. F. 3-5/08 Z. \ . 
2. F. 1-2/08 Mann./ . 
? 
19| 
31/5/08 
37-582 000 000 
20-657 000 000 
2-328 422 400 
1-840 302 000 
7 all normal 
3 
! 
' The side to whicheachovary 
belonged is uncertain. 
First polar body stage. 
j 
' The ova in the large follicles 
3. F.D.A. 41/15 R.F1. \ 
iii 
21 
2/6/15 
15-886 293 600 
•832 032 000 
8 (2 deg.) 
were in the stage of the 
4. „ „ L.Z. / 
18-389 376 000 
1-236 452 400 
5 (3 deg.) 
1 
first maturation spindle 
[ stage. 
The animal was dispatched 
from the trader in the 
same box with amale, but 
in a separate compart- 
5. P.D.B. 1/16 R.Mx. 'I 
24 { 
Under \ 
24 j 
28/4/16 
25-991 500 000 
•533 360 800 
6 all normal 
ment. The compartment 
was broken in transit, and 
6. „ „ L.M.F.] 
33-205 450,000 
1-007 760 240 
8 
the female Was killed 23 
hours after it left the 
breeder’s premises. Nu- 
cleus present. First 
maturation spindle not 
. formed. 
(Between 21 and 24 hours 
after insemination, but 
7. F.F1.R. 1-1/14\ . 
„ 
26/5/14 
31-835 546 875 
1-47L 335 936 
2 both normal 
1 
I exact time uncertain. 
8. F.Per.L. 1-1/14/ . 
, 
27-799 065 000 
•725 760 000 
6 all normal 
] 
1 Some ova with first matu- 
ration spindle, some with 
l. first polar body. 
(Between 21 and 24 hours 
9. F.Z.R. 1/14 \ ■ 
10. F.Fl.L.1/14/ . 
21 
” 
” 
29-180 937 500 
38-322 308 740 
1- 412 775 000 
2- 162 073 600 
6 all normal 
6 „ 
after insemination, but 
i exact time uncertain. 
First maturation spindle 
l stage. 
Table VII. — Ferrets Inseminated at First (Estrus op Season. Time op Death 
apter Insemination over 24 and under 49 hours. 
Specimen. 
§1 
0 
1 
a 
itirs after 
mination. 
Date 
of 
Death. 
Size of 
Ovary 
in mm. 3 
Size of 
largest 
Follicle 
Number of 
Follicles 
- of largest 
Notes. 
O V 
in mm. 3 
size. 
fin first polar body stage in ovary. In 
1. 
2. 
F.D.A. 43/15 R.Mx. \ 
„ L.F1. / 
21 
26J 
9/6/15 
41-343 120 000 
39-127 762 800 
1-253 070 000 
1-581 465 600 
5 all normal 
9 
J 
the right ovary there Were two and 
in the left ovary three degenerate 
follicles slightly smaller than the 
[ normal follicles. 
3. 
4. 
F.G.B. 3/15 R.F1. \ . 
„ „ L.Z. / . 
16-| 
27,) 
23/4/15 
34-215 640 625 
40-381 035 968 
1-353 081 600 
1-433 700 000 
5 
6 „ ‘ 
| 
^In first polar body stage in ovary. 
( First maturation spindle not yet formed. 
5. 
F.G. A. 1/15 R.Z. \ . 
22 
,, 
38-598 906 250 
1-380 744 000 
7 
J 
1 Nuclei of ova peripheral, but still 
6. 
„ „ L.F1. / . 
” 
21-081 098 750 
1-089 262 080 
1 normal 
1 
i with distinct nuclear membranes and 
L no signs of mitosis. 
7. 
F.D. D/16 R.Per. V 
301 
5/5/16 
45-622 050 000 
3-595 536 000 
4 all normal 
(In first maturation spindle stage in 
8. 
„ „ L.P.N.F. / 
” 
” 
58-201 200 000 
2-967-674 400 
7 
It ovary. 
