DESCRIPTION OF PLATE XX. 



Sprayed and unsprayed Crawfords Late trees in the orchard of Mr. A. D. CuttH, 

 Live Oak. The tree at the right was sprayed in Fehruary, 1893,' with lime, sulphur, 

 and salt; the trees at the left were untreated. See "Notes on auxiliary experi- 

 ments in California," for a full account of the work at Liveoak. (Photographed 

 in May, 1893, after most of the diseased leaves had fallen from the unsprayed trees. 

 Compare with PI. VII.) 



