GENETIC STUDIES OF RABBITS AND RATS. 



31 



Table 6. — VariaMon of skull-length in the severed groups of rabbits studied. 

 [All measurements in millimeters.] 



Table 7. — Variation in millimeters of anterior skuU-width in the 

 several groups of rabbits studied. 



Table 8. — VariaMon in millimeters of posterior skull-^widih in the several 

 groups of rabbits studied. 



