Tabernanthe Iboga, 1895 
Tea and coffee diseases, 189! 
blights, 1898 
Tilletia spores, 1899 
Tree tomato, 1887, August 
Tricholoma saevum. l'.mt; 
Urera tenax, 1888 
Urophylictis leproides, 1900 
Use of seeds for ornamental purposes, 
Vanilla flower, fertil 
Weather charts. 1890 
Weevil-borer, 1892 
West Indian lim«\ IS'.i 
Xyk-bonis perioral)*. IN'.!' 
Yam bean, 1889 
— , short- 
Yoruba indigo, 1 
