158 Symmetrij of Egg and Symmetry of Embryo in the Frog 
m 
c6 
Ah 9° 
-45 -35 -25 -i5 -5 +5 +15 -1-2 5 +35 ++5 -I-S 5 +65 +75 +85 -85 -75 -65 -55 -t 
Fig. 8. Plane of Symmetry and First Furrow. 
TABLE VIII. 
Correlation between Plane of Symmetry and First Furrow. 
First Furrow and Sagittal Plane. 
90 
C 
+ 
90 Totals 
1 
2 
1 
2 
2 
1 
7 
1 
2 
1 
2 
2 
1 
1 
10 
2 
2 
4 
2 
1 
2 
3 
6 
1 
1 
25 
4 
3 
6 
8 
8 
4 
2 
4 
3 
4 
1 
48 
7 
6 
5 
9 
26 
10 
6 
3 
5 
9 
11 
99 
0 
0 
17 
3 
5 
4 
2 
9 
26 
9 
5 
2 
6 
4 
92 
3 
2 
2 
4 
5 
2 
20 
5 
3 
2 
49 
+ 
2 
2 
3 
5 
4 
5 
4 
1 
1 
29 
1 
2 
1 
1 
2 
5 
13 
1 
1 
3 
3 
2 
1 
12 
1 
1 
2 
1 
1 
1 
3 
11 
Totals 29 
20 
25 
27 
30 
58 
52 
48 
29 
27 
29 
23 
Means -t- "4 
-•6 
-I--18 
- -13 
-•1 
- -14 
-f4 
-t--6 
+ •32 
-h-09 
+ •5 
-F-6 
397 
p= -087 ±-032. 
