50 CALIFORNIA CITRUS CULTURE. 
(After Horne.) 
Notice the toadstools at the base of the tree. 
Fic. 25.—Pomelo attacked by the root-rot fungus. 
a serious attack on the walnut. Professor Horne finds pears and figs 
especially resistant to this disease. 
All interested in citrus culture should possess Bulletin 218, Experi- 
ment Station, University of California, by Professor Ralph E. Smith 
and Elizabeth H. Smith. For one who wishes to study more deeply into 
this intricate subject of fungi, ete., Duggar’s Fungous Diseases of 
Plants will prove admirable. 
