EXPERIMENT STATION BULLETINS. 251 



lar insects, there are several effective remedies, althou^^h none of them 

 equal kerosene emulsion. Strong soap-suds will be found a simple and 

 quite effective remedy, and tobacco tea is even more reliable. This can be 

 made by soaking tobacco stems in hot water. For some purposes pyreth- 

 rum, or buhack, will be of value. This can be applied as a powder with a 

 bellows, or in water at the rate of a teaspoonful to the gallon. 



LEAF-EATING INSECTS. 



Under this heading we may include any forms that injure the foliage by 

 biting and chewing the foliage. The plum has something like forty insects 

 that have been known to feed upon it, and there are at least ten that have 

 been found injuring the foliage of the peach. None of them, however, 

 are particularly troublesome, as it is only in rare instances that they become 

 sufficiently numerous to be injurious. When their presence is discovered, 

 it will be a very simple thing to destroy them by the use of Paris green, 

 and as a safeguard we would always recommend the addition of a small 

 quantity, say two ounces to forty gallons, whenever Bordeaux mixture is 

 applied during the growing season, and at the present time the extent of 

 the injury caused by fungous diseases is such that the application of this 

 fungicide should not be neglected. 



The cherry slug {Eriocampa cerasi) sometimes appears upon the plum, 

 but can be controlled by the arsenites. 



SNOWY TREE CRICKET.-(Oecan</it« niveus, Serv.) 



The branches of the plum and peach are often punctured by this insect 

 and eggs are deposited in the punctures. They select the young growth 

 of the trees and make their punctures in long lines one above the other, 

 until from thirty to fifty eggs have been deposited; sometimes a half dozen 

 or more groups of punctures are made upon a single branch. The injured 

 tissues become dry and the branch is much weakened, although, if in a vig- 

 orous, growing condition, the injury soon becomes covered up. Some of 

 the punctured branches can be cut away, but in recently set trees it is gen- 

 erally impossible to cut all of them out without removing too many of the 

 shoots. 



The eggs hatch in the early summer and the mature insects are rather 

 beneficial than otherwise, as they feed upon plant lice. In the fall they 

 deposit eggs, and if they are so numerous as to need a remedy, this is the 

 best time. As soon as they are found to be at work, the trees 'should be 

 sprayed with kerosene emulsion to which one pint of crude carbolic acid 

 has been added for fifteen gallons of the emulsion. It must be confessed 

 that this is not an ideal remedy, as, while the kerosene will kill all the 

 insects it touches, its effects are not lasting, the carbolic acid merely tend- 

 ing to keep the insects from depositing eggs in the trees sprayed, and 

 driving them to other plants. The raspberry, currant and grape, are also 

 injured by the snowy cricket. 



PLUM CURCULIO.— (CoHofrac/ieiMs nenuphar, Herbst.) 



The fruit of the plum, peach, and cherry, as well as the apple and pear, 

 are often much injured by the larvae of this pest, so much so that unless 

 precautions are taken it is almost impossible to secure a crop. The plum 



