Jan. is. 192 1 Tubers, Skins, and Sprouts of Potatoes 635 



(7) Osborne, Thomas B., and Campbell, George F. 



1896. The proteids OF THE potato. In Jour. Amer. Chem. Soc, v. 18, no .7 

 p. 575-582. 



(8) Ramsay, J. T., and Robertson, W. C. 



1917. THE COMPOSITION OF THE POTATO PLANT AT VARIOUS STAGES OF DEVELOP- 

 MENT. In Jour. Dept. Agr. Victoria, v. 15, pt. 11, p. 641-655, illus. 



(9) Schulze, E., and Barbieri, J. 



1878. UEBER DEN GEHALT DER KARTOFFELKNOLLEN AN EIWEISSSTOFEN UND AN 



amiden. In Landw. Vers. Sta., Bd. 21, p. 63-92. 



(10) 



1880. UEBER DAS VORKOMMEN VON LEUCIEN UND TYROSIN IN DEN KARTOFFEL- 

 KNOLLEN. In Landw. Vers. Sta., Bd. 24, p. 167-169. 

 (n) Sjollema, B., and Rinkes, I. J. 



1912. die hydrolyse DES KARTOFFELEIWEISSES. In Ztschr. Physiol. Chem., 

 Bd. 76, Heft 5/6, p. 369-384. 



(12) Stewart, F. C, Eustace, H. J., and Sirrine, F. A. 



1902. potato spraying experiments in 1902. N. Y. State Agr. Exp. Sta. 

 Bui. 221, p. 235-263. 



(13) Woods, Chas. D. 



1919. potato studies. Maine Agr. Exp. Sta. Bui. 277, p. 17-32. 

 17776°— 21 4 



