ERRATA 



The Journal of Experimental Zoology, Volume 31, Number 4, 

 November, 1920 



Page 411, second line from bottom, for 1.5 per cent read 0.15 per cent. 

 If 419, top line, for 0.1, read 0.01 to, etc. 

 (( 419, line 9, for 0.5 per cent, read 0.05 per cent. 

 u 439, line 25, for (>0.3 per cent) read O0.03 per cent). 



THE JOURNAL OF EXPERIMENTAL ZOOLOGY, 

 VOL. 33, NO. 1, MAY, 1921 



