296 STATE HORTICULTUEAL SOCIETY. 



BROWN SPOT (Cladosforium carpophilum, Thtlm.). 



This often dees coDsiderable injury to peaches,- particularly to small, 

 seedling varieties. It shews upon the fruit as brown, velvety spots and, 

 if these are very numerous, they will run together and form patches of 

 considerable size. When thus attacked, the fruits fail to reach their nor- 

 mal size and are often rendered of no value for market. While the efficacy 

 of fungicides for this disease is not known, it is believed that they will 

 lessen the injury. At any rate there will be no extra cost for the applica- 

 tion, as it will be required for the rot and other diseases. This disease has 

 also been noticed upon Kussian apricots, where the injury is even more 

 severe than upon the peach. 



Another disease, the exact nature of which has not been ascertained, 

 but which is well described by the common name of " pimples," is also 

 found upon the fruit, particularly of seedlings and the Wager variety. It 

 appears as small swellings, or pustules, and as they are sometimes quite 

 numerous they often, seriously injure the appearance of the fruit. The 

 spots are surrounded by a dark purple ring, and the center, particularly of 

 the older spots, is white. This disease does not appear until about the 

 time the fruit ripens, and nothing is certainly known as to the effect of 

 fungicides upon it. It may become a troublesome disease. 



The "shot-hole disease" which is described under the plum and cherry, 

 also attacks the leaves of the peach, causing small holes to appear, owing 

 to the destruction and dropping out of the tissues. It seems to be most 

 troublesome on damp soils and in wet seasons, but the treatment recom- 

 mended for the leaf-curl and the rot seems to lessen the injury. 



INSECTS OF THE PEACH. 

 THE PEACH-TREE BORER {Sannina exitiosa, Say). 



Each peach-grower must make the 

 acquaintance of this unmitigated pest 

 very early in his work and devise some 

 means of protection to his trees or the 

 borers will, in a few seasons, assume 

 control. The yellowish white borers, 

 with their black jaws, reddish brown 

 Fig. i8.-Moths of Peach-Tree Borer: 1, female; head, and eight pairs of legs are too 

 2. male. -^g]! kuown to need further description, 



but the images to which they change (Fig. 18) are rarely seen. The 

 male and female differ somewhat in color and size, but they are both 

 beautiful day-flying moths that are lovers of sunshine and heat. There is 

 but a single brood each season, yet that brood is so irregular that in cut- 

 ting out the borers there will be a great variety in size, and the moths are 

 present all through the summer, being the most common through July. 

 Soon after appearing, the female begins to deposit eggs, one in a place 

 near the roots, though sometimes higher up on the trunk, even to where 

 the branches start. When the eggs hatch, the young borers gnaw their 

 way through the bark. They then follow the bark closely, cutting long 

 channels as they go, usually toward^ the roots but sometimes in other 



