J. W Jenkinson 
179 
deviates to a great and an equal extent from both First Furrow and Sperm- 
entrance Meridian. The second correlation is clearly thrown out by three 
abnormal values. There is no escaping these, though I may point out that in all 
three cases the sperm had entered near the equator of the egg (several instances of 
its entering at the same large inclination to the axis occur, however, in the rest of 
the table) and in all three of course the value of the angle between Sperm- en trance 
Meridian and First Furrow is great. Should these three cases be omitted the 
value of p would rise to '598 + '060, practically the same as when the eggs are in 
what one would have imagined to be unfavourable circumstances. That the 
coefficient is not greater still is due to the absence of high frequencies in the 
positive corners of the table, the absence, that is, of large deviations, and in the 
same sense, of both Sperm-entrance and First Furrow from the Plane of Symmetry. 
It must, indeed, be conceded that these two external agencies are not unfavourable 
to the relation between Sperm-entrance and First Furrow. This will become 
intelligible when we remember that the position of the latter is only so far affected 
by gravity that it tends, to some slight extent, to be at right angles to the gravita- 
tion plane, and when we see, as we shortly ishall do, that ' pressure ' affects the 
Sperm-entrance and First Furrow in precisely the same way. 
TABLE XXIX. 
I. Eggs close. Axes horizontal. 
XXIX. c. Correlation between Sperm-entrance Meridian 
and Plane of Symmetry. 
First Furrow and Sperm-entrance Meridian. 
90 
+ 
90 
Totals 
-90 
1 
1 
1 
1 
2 
2 
1 
1-5 
1 
2 
•5 
3 
1 
1 
11 
3 
2 
1 
1 
2 
3 
4 
12 
1 
9 
6 
22 
1 
1 
7 
-1- 
90 
1 
1 
1 
1 
1 
2 
1 
1 
6 
3 
1 
2 
3 
10 
2 
2 
3 
1 
6-5 
3 
2 
1 
1 
3 
1 
1 
1 
1 
1 
27 
9 
6 
4 
13 
Totals 
1 
3 
5 
9 
39 
36 
5 
3 
6 
6 
2 
120 
•006 ± -061. 
