93 



which we have to oontend, perhaps equal to the San Jos^ 

 scale. Th mopt ^i porous measures should be adopted for 

 its eradication while it is yet in its incipiency. 



BLACK KNOT. {PloKrightia nwrhosa Sch.) 



Fig. 3. — Black Knot. — Old knots on cherry twigs, natural size. 

 (Scott, Bui. No. 1, Georgia State Board of Entomology.) 



Plums and cherries are subject to the attacks of a dis- 

 ease very expressively termed "Black Knot." This dis- 



