GENETIC STUDIES OF RABBITS AND RATS. 

 Tablr 20. — Corrdation of weight with tUMa. 



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Mean weight, 2,143.6±16.8. S. D. weight, 446.6^:11.9. 



Mean tibia, 93.77 ±0.20. S. D. tibia, 6.29 ±0.14. r, 0.768 ±0.016. 



Table 21. — Correlation cf hutnervs4ength with ikvU-lenglh. 



Mean humenu, 64.16±0.13. S. D. humenii, 3.77 ±0.09. 



Mean skull, 72.96±0.ie. S. D. skull, 4.46±0.11. r, 0.834±0.011. 



