372 | [AsseMBLY 
which, other things being equal, thrives best upon a vigorous plant, 
yet does -not disdain a weakly one; but its draft upon the plant 
naturally shows most in the latter. The same fungus, although 
also doing damage to seedling apples is oftenest met with on cher- 
ries, even curling the leaves and causing their premature fall. 
As the fungus is an entirely supertiicial one, it ought to be pos- 
sible to control it. Sulpur is the principal remedy for this class of 
ailments, but [ am not aware that it has been tried in this case, and 
its efficacy with each fungus can only be told by testing. It is to he 
applied by wetting the foliage, preferably with water containing con- 
siderable soap, and then dusting on the sulphur. 
Quince Ror. 
Spheropsis Cydonie C, & E. 
When the quinces were gathered at the Station in October quite 
a considerable part of them had begun to rot, many having become 
worthless. The rotting usually began at a few centers only on each 
fruit and spread regularly in circles. until the whole fruit had de- 
eayed. The spots retained considerable firmness, but eventually be- 
came more or less flattened. As they enlarged the centers took on a 
blackish hue, and by close examination could be seen to be covered 
with black points. These points contained innumerable brown 
spores, capable of spreading the disease. This was tested (exper. 
218) by inserting a minute piece from the surface of the diseased 
fruit containing the spores beneath the skin of a sound quince under 
a bell jar. The spores germinated, and the rotting progressed 
slowly, when, on the twenty-second day, the spot had reached an 
inch and a half in diameter, and the fruiting points had begun to 
appear. The same experiment was tried upon a pear (exper. 222), 
but although the spores germinated, the mycelium did not thrive 
and penetrate the tissues. Common rot (Penicillium) soon set in, 
and terminated the experiment at the end of the ninth day. No 
preventive is known for this malady. 
DiIsEASES OF THE PRACH. 
Peach Yellows. 
No cases of yellows occur in any peach orchards in the immediate 
vicinity of the Station. On July 11 a visit was made to several ex- 
tensive orchards near King’s Ferry on Cayuga lake, about twenty 
miles distant, where through the kindness of Mr. J. OC. Atwater I 
had the opportunity of inspecting great numbers of sick trees in all 
stages of decline. Whether any of these trees were suffering from 
the genuine yellows (if it be a specific disease at all) I was unable to 
satisfy myself. That many of them were slowly dying could not be 
questioned. Some showed premature fruit, a few had small, wiry ~ 
and somewhat fascicled branches, and the majority had more or less 
