14 BENNET M. ALLEN 
Table 3 serves to show for purposes of comparison the num- 
bers of sex-cells found in different specimens of Amia. 
TABLE 3 
Number of sex-cells in Amia calva 
NUMBER OF SEX-CELLS IN MESODERM 
STAGE SPECIMEN | 
ihe ie Total 
Hours. mm. | | | 
132 | A None None | 0 
132 B None None 0 
132 C None None | 0 
132 D None None 0 
137 A ve 4 11 
137 B 9 7 16 
Bi C 21 8 29 
147 A 15 Ti 22 
147 B 14 17 31 
147 C 22 ul 33 
147 D 48 18 66 
147 E 39 28 67 
147 | F 50 26 76 
155 3.0 15 34 49 
3.4 62 41 103 
3.5 | A 39 53 92 
a5) B 59 48 107 
Ball A 42 30 | 72 
30 | B 45 47 92 
4.0 40 47 rf 
5.0 23 20 43 
5.6 42 56 98 
6.0 28 34 62 
a0 38 36 74 
h26 33 42 75 
9.1 36 40 76 
ili 4! 28 54 82 
15 RO A 28 49 ha 
15.0 B 38 45 83 
16.0 A 19 14 33 
16.0 B yy) 17 39 
16.0 C 99 
eT 47 55 102 
This stage is a convenient starting point from which to proceed 
in the study of earlier stages. 
