Culture L 44c was used in producing these infections. 
A—Infection produced by allowing a mixture of 2 cc.culture decoction and 5 cc. distilled water to 
trickle down into the leaf axils. This was poured into the top of the plant. Not all of the smut 
lesions are shown in the illustration; arrows indicate visible sori. 
B—Infection resulting from injection of liquid culture by means of a hypodermic needle. 
