On some Diseases of the Sugar-Cane 
in the West Indies. 
BY 
ALBERT HOWARD, M.A., A.R.C.S., F.L.S., 
Late Mycologist to the Imperial Department of Agriculture for the West Indies. 
With Plate XVIII. 
Table of Contents. 
PAGE 
I. Introduction 373 
II. The ‘ Rind ’ Disease of the Sugar-Cane 374 
1. The Melanconium stage of Trichosphaer ia Saccharic Massee . . 374 
2. The macro- and micro-conidial stage of Trichosphaeria Sacchari , 
Massee 380 
3. The ascigerous stage of Trichosphaeria Sacchari , Massee . . 383 
4. The fungus causing the c rind ’ disease of the sugar-cane in the West 
Indies 383 
III. A Root Disease of the Sugar-Cane 391 
1. Characters of the disease 393 
2. Cause of the disease 398 
3. Some relations between the host and the parasite . . . . 403 
4. Prophylaxis 406 
IV. Summary of Conclusions 407 
V. List of Papers Cited 409 
Explanation of Figures 410 
I. Introduction. 
I N the autumn of 1899 I began an investigation into the 
life-history of Trichosphaeria Sacchari , Massee ( 5 ), some 
of the earlier results of which were published in the c Annals 
[Annals of Botany, Vol. XVII. No. LXVI. March, 1903.J 
