160 : Report oF THE BoTANIST OF THE 
brief study of this disease convinced us that we had here to do 
with a trouble similar to the leaf scorch of beets. Like the beet 
disease it was most severe on trees standing in dry soil. Upon 
inquiry among fruit growers it was found to be of common ocecur- 
rence this year. 
The worst case of the disease which has come under our obser- 
vation occurred in an orchard belonging to Maxwell Bros. near 
Geneva. ‘This orchard contained 715 Montmorency cherry trees 
about eleven years of age, the trunks having a diameter of from 
four to five inches. The trees were set fifteen feet apart each way. 
Over the whole orchard the soil was uniform and had been 
thoroughly cultivated. It consisted of a light clay underlaid 
with slate at a depth of from eighteen inches to two feet. The 
orchard was located on a gentle eastern slope and was closely 
surrounded upon all sides by other fruit trees. 
On October 4 each tree in the orchard was examined and an 
estimate made of the amount of foliage affected. The result was 
as follows: “ 
1 tree, 100 per cent. of the foliage affected. 
637 trees, 75 to 85 per cent. of the foliage affected. 
57 trees, 50 per cent. of the foliage affected. 
13 trees, 25 per cent. of the foliage affected. 
5 trees, 5 per cent. of the foliage affected. 
2 trees, not affected. 
715 
It is an interesting fact that although six-sevenths of all the 
trees in the orchard showed 75 per ct. or more of the foliage 
affected there was but a single tree upon which all of the foliage 
was killed. The trees were affected with remarkable uniformity. 
The worst affected trees stood in no particular part of the orchard 
but were scattered all through it. Although it frequently hap- 
pened that one side of a tree would be severely attacked while 
the other half was entirely exempt, there was no uniformity 
as to the side attacked; it was quite as often the north side as any 
