TABLE 11 



"S- R9s /?crs 



W9s Wd's 



"B' R9s Ed's Wqii 



TTcfs 



1 (148 

 4 (220 



6 (179 



7 (160 



2 (170 

 5 (140 



75 

 92 

 69 

 63 



80 

 44 



166 

 124 

 144 

 150 



74 



146 



123) 



135) >i:^'- 



96) 



80) 



90) 

 93) 



X w 



1 (148 



3 (128 



4 (131 



6 (132 



7 (159 

 [8 (158 



1 ( 67 



4 ( 88 



5 (142 



6 (105 



8 ( 65 



9 (119 



56 

 29 

 46 

 42 

 54 

 61 



27 

 26 

 54 

 45 

 20 

 61 



135 

 107 

 132 

 92 

 121 

 152 



55 

 78 

 96 

 92 

 76 

 93 



77) 

 61) 

 85) 

 68) 

 101) 

 79) 



37) 

 51) 

 64) 

 43) 

 35) 

 61) 



1 (138 68 146 



X w 



77) 



xw 



2 (121 



45 



106 



■2) 



(109 



34 



139 



81) 



Total no. of c^s = 3053 No. of cross overs = 1405 

 The ratio of the cross overs to all the d^s = 1405 -r- 3053 = .46 



547 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 19, NO. 4 



