81" 



80* 



79* 



78" 



77* 



76* 75* 74* 73" 72* 71* 70* 



J42« 



-41' 



---,.^40' 



-39* 



38' 



37* 



36« 



35» 



34- 



33* 



-32* 



75* 



74* 73* 72* 71* 70* 



Fig. 3.— Loo«tion of reooTorlos from 1932 tngRlnp experiinent at Mo-tRuk, K .Y . 



54 



