178 



ROSCOE R. HYDE 



Truncate ^.Truncate 

 ? 

 48 



Diagram A Effect on productivity of crossing truncate and inbred stocks; 

 summary from tables 3, 4 and 5. 



producing strain, in fact, more than twice as many as when she 

 was fertihzed by her own male. The female of the low-producing 

 strain was evidently producing a large number of eggs that were 

 capable of fertilization as shown by the fac£ that on an average 198 

 of her eggs were fertilized. And yet the truncates used for con- 

 trol only produced an average of 48 to the fertile pair. The 



TABLE 5 



Control for the low-producing truncate stock, used in Experiment I, table 3; compare 



with table 1 



* Sterile 



