TN THE TROPICS. 
37 
Explanation of Figures in Plate I. 
Fig. a-d. Flask for nutritive solution, x 
Figs. 1-7. Hemileia vastateix. 
1. Germinating spores in nutritive solution, 1-24 hours after 
sowing. X 230. 
2. The same spores after 36 hours, x 230. 
3. Germinating spores, 48 hours after sowing, x 230. 
4. Mycelium, 14 days old. x 300. 
.5. Mycelium from a coffee leaf, showing transverse walls ; the 
only case that I have observed, x ISO. 
6. Very young, unripe spores. Exhibited slight germination 
phenomena in the nutritive solution, but soon died, x 230. 
7. Spores on a coffee leaf, x 180. 
