TABLES. 



127 



Table 78. 

 Different combinations of matings which have been made. 



Table 79. 



Percentages of hybrid male offspring with many motile sperm in matings of female hybrids 

 with guinea-pigs, and female hybrids with male hybrids. 



Table 80. 

 number of young per litter in the wild and tame parents and in the hybrids. 



Generation. 



Wild 



Tame 



Tame (Minot's results) 



Tame females by wild males . . . 



Fi, i wild 



Fa, J wild 



Fa, I wild 



Fi, 1^ wild 



Fs, 3^ wild 



Fe, g^wild 



Total 

 individuals. 



46 

 484 

 366 



37 



83 

 217 

 312 

 344 

 122 



36 



Number of 

 litters. 



34 



207 



143 



16 



52 



114 



152 



172 



60 



19 



Average 

 per litter. 



1.35 

 2.34 

 2.56 

 2.31 

 1.60 

 1.90 

 2.05 

 1.98 

 2.03 

 1.89 



