Dastur . — The Mode of Infection by Smut in Sugar-cane. 395 
Fig. 2. Longitudinal section of an inoculated leaf-bud showing the penetration ot hyphae in 
four days, x 51. 
Fig. 3. Longitudinal section of a scale leaf, x 357. 
Figs. 4 and 5. Hyphae in the hairs of a scale leaf, x 368. 
Figs. 6-9. Penetration of hairs by the germ-tube from sporidia. Fig. 6 , x 550 ; Figs. 7-9, 
x 368. 
Fig. 10. Hairs from scale leaves: a-d, thin-walled hairs which are capable of being infected ; 
e-i, thick-walled hairs which cannot be infected, x 245. 
