148 EXPERLAIENT STATION. [Jan. 



to cin])loy sanitary iiiethod.s in growing the crop, to use seed 

 from healthy and vigorous phints. and try to prevent injuries 

 from insects, etc. 



Additional IJiokkkknces. 

 Reed, Science, ii. s.. Vol. ;51, j). 038, 1910. 

 Cooke, Grevielea, Vol. 5, p. 123, 1877. 

 Tubeuf & Smith, '' Diseases of Plants," !>. oW, 18!)7. 

 "Market Gardener's Jounial" (Louisville, Ky.), Vol. 7, No. 5, 1910. 



