No. 636] GUINEA PIGS AND TUBERCULOSIS 



37 



ages, but the assumption that these survivors died on 

 the following day is unfair only to the superior stocks. 



TABLP] IX 



Averages of the Characteristics of the GnxEA Pigs Tested foe Re- 

 sistance TO Tuberculosis in Lots 10-14 



I (35) ; 



In each case, the crossbreds {CO, CA, and B) lived a 

 little longer on the average than the combined inbred 

 families. This result is in line with the results of cross- 



