ol 
Total. | Index. 
Inbreeding and cross- 
Size of litter. 
breeding experiments, 1916-1919.] 
EFFECTS OF INBREEDING AND CROSSBREEDING. 
TABLE 16.—Percentage raised to 33 days of the young born alive. 
{Average in litters of each size, the combined average, and the index (see Table 15). 
Experiment. 
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