DESCRIPTTOX OF PLATE XVT. 



Fig. 1 shows the con(litif)n of the trees sprayed on one side (considered in the text, 

 p. 123). The right side of the tree shown was sprayed with Bordeaux mixture, the 

 left side was imsprayed. (Compare with Pis. XVII, XVIII, and XIX.) 



Fig. 2 shows the condition of the tree sprayed on one side after curl had largely 

 denuded the unsprayed half at the left. 



