342 STATE HORTICULTURAL SOCIETY. 



more than a year old an unusual number of slender canes, and invariably in 

 connection an apparently yellowish red rust on the under side of the leaves, 

 particularly on the border of the leaf. The disease seems to be both hereditary 

 and contagious, tips from diseased plants showing the disease before they 

 are a foot high ; while plants vigorous and healthy and bearing fine crops of 

 fruit will sometimes become entirely worthless the following season. Sometimes 

 only one side appears to be affected, and I have in many cases removed that part 

 of the bush, but invariably the rest soon follows : I believe a prompt and 

 thorough removal of all diseased plants a safe and efficient remedy for the disease. 



*4:~***^: ******* 



P. M. Augur, State Pomologistin Connecticut, remarks upon this fungus and 

 others of its ilk, as follows : 



When the blighted leaves of the raspberry plant or vineyard have fallen, they 

 should all be raked off and burned ro destroy the breeding spores, thus aiding 

 in checking the disease in future. An application in May of ten bushels per 

 acre of air-slaked lime will tend greatly to prevent mildew on the grape or rust 

 on the strawberry, raspberry, or blackberry. In the vineyard let tlie above be 

 followed with a dusting of sulphur about July 1, from the sulphur bellows, to 

 be repeated at intervals of two or three weeks, somewhat according to the 

 damp, sultry weather which may prevail. When culture, pruning, and thin- 

 ning have been good, the owner iiuiy with great profit use these well-known 

 antidotes of all the destructive i'ungi with many varieties of grapes; this will 

 be an essential condition to prevent failure and loss. 



THE YELLOWS. 



We have been picking up all the things said and written concerning the 

 peach yellows during 1882, and althougli enough has been written to fill 

 volumes, really no new facts have been brought out. However, we give space 

 to some opinions as folloW'S: 



A correspondent of the New York Tribune, who listened to some learned 

 papers at; the Montreal meeting of the association devoted to progressive agri- 

 culture, says: 



Prof. C. E. Goessman reported in reference to peach yellows that the disease 

 at the Massachusetts Agricultural College was far worse in trees on poor, light 

 soil ; where the soil was strong it obtained little hold. He thinks — and 

 Professors Penhollow and Halsted agree — that the fungi seen in the cells is a 

 result of the disease, not a cause. It seems evident from the surroundings that 

 there is some lack in the soil which gave rise to the enfeebled growth. 

 Professor Maynard in 1878 commenced to treat the soil where the diseased 

 trees were to a superphosphate, adding three or four pounds of chloride of 

 potassium to each tree. Soon the trees improved and now they are in good 

 health. Professor Penhollow and the writer both made chemical analyses of 

 the sound and diseased wood. There was a lack of potash in the latter and an 

 excess of starch in the cells. The cause of the disease seems to be improper 

 assimilation, because of impoverished or improper soil. 



************** 



From the Boston Journal ol Chemistry we quote : 



Noticing in the annual report of the Massaciiusetts Agricultural College the 

 remark made by Prof. Maynard, of the botanical department, that the peach- 



