34 



GENETIC STUDIES OF BABBITS AND RATS. 



TABLE 14. Correlation of ear-length with humerus-length. 



Mean ear-length, 105.460.41. S. D. ear-length, 11.460.29. 

 Meanhumerus, 64. 17 0.13. S. D. humerus, 3.73 0.09. r, 0.823 0.011. 



TABLE 15. Correlation of ear-length with femur-length. 



Mean ear-length, 105.45 0.41. S. D. ear-length, 11.47 0.29. 

 Mean femur, 80.730.18. S. D. femur, 5.000.12. r, 0.8280.011. 



