EXPERIMENT STATION BULLETINS. 253 



of suitable size, which is open to the center from one end to admit the 

 tree. Sometimes a screen is mounted upon a wheel-barrow. The trees are 

 jarred by bumping them with a maul padded with rubber to prevent 

 injury to the bark. To admit of giving heavy blows to large trees, some 

 of the branches are cut off leaving stubs to pound against, or pieces of 

 half-inch gas pipe or large nails may be set in the trees for this purpose. 

 The frequency and number of jarrings will depend upon the abundance 

 of the curculio, varying from daily to three or four days apart and con- 

 tinuing for from one to three weeks. The insects should be collected upon 

 the screen and placed in a pan with a little kerosene in the bottom. 



While the jarring is the surest way of fighting this insect, the use of 

 arsenites will generally be effectual in saving enough for a crop if they 

 have been kept in check in previous years. 



With a good setting of fruit and a comparatively; small number of insects, 

 a good crop will be insured by spraying, and where the treatment is kept 

 up from year to year little or no harm is done by the curculio, even when no 

 jarring has been done. While spraying is sure enough to be recommended 

 as above, especially if Bordeaux mixture is also used, we advise all to watch 

 their trees, and if the curculio are present in numbers to jar and thus 

 make sure of them. 



The first spraying should be made as soon as the blossoms fall, and will 

 need to be repeated about twice, at intervals of ten days. If rains inter- 

 vene, three or four applications at shorter intervals should be made. 



By combining arsenites with Bordeaux mixture we shall also have a 

 remedy for the various fungous diseases of these fruits, and will both 

 render impossible the burning of the foliage and make it more efficacious 

 as an insecticide, as the lime will tend to hold it for a longer time upon 

 the foliage, and will also in part prevent the deposition of the eggs. 



The use of carbolized lime also will be found of value, when the arsen- 

 ites are not employed, or a similar result, i. e., the driving of the 

 insects away from the trees, can be secured by the addition of about one 

 pint of crude carbolic acid to twenty gallons of Bordeaux mixture. 



.the: PLUM GOUGER. (Coccotoiiis prunicida.) 



The gouger in some respects resembles the curculio, but it differs in 

 being of a grayish-brown color with frequent white and black spots upon 

 its back; its legs and thorax are of a dull yellow color. In size it is some- 

 thing over one fourth of an inch long, and its snout is stout, projecting to 

 the front, so that it can not be doubled back under the body. The eggs 

 are placed in pits that the insect bores in the fruit of the plum nearly as 

 deep as its snout is long. The pits are enlarged at the bottom and the 

 snout is used in pushing the eggs to the lower end. The larva, upon 

 hatching, eats its way into the seed and feeds upon its kernel. It pupates 

 within the stone, and then emerges as a perfect beetle in September. The 

 gouger is seldom very iDJurious, but the same remedies answer for it as for 

 the curculio, whenever it does appear. 



THE ROSE CB.&.FBR~-( Macrodactylus subspinomis). 



The rose chafer, rose beetle, or rose bug, as it 'is variously called, is fre- 

 quently quite injurious from its eating the flowers, young fruits, and leaves 

 of the peach and plum, as well as the grape, apple, and other fruits, and 

 various flowers. 



