88 =o W..«G.« Farlow—Disease of Olive and Orange Trees. 
the disease are somewhat curled and shrivelled, and are of a 
browner color than normal leaves which have been gathered ; 
but a few weeks. On both surfaces of specimens sent us are — 
black spots of greater or less extent, but in no case is the leaf 
perfectly black. On the upper surface the black spots are more : 
numerous, more distinct in outline, and harder in substance, 
than on the lower, where they were more diffuse and of a pow- 
dery consistence. The — of which we received only small — 
specimens, are covered wit 
The 
haustoria as in the case of some of the leaf parasites belonging 
y do not enter into the cells of the olive, and there are nO — 
4 
