88 BOARD OF AGRICULTURE. 



around the trunks of the trees for the worms to spin their 

 cocoons under, and to remove them at the proper time and 

 put them into scalding water to destroy the worms. It has 

 also been suggested that swine be kept in the orchard to eat 

 the infested fruit as soon as it falls and Ijcfore the worms 

 escape. No doul)t in this way many of the worms will l)o 

 destroyed, and if this plan should be carefully followed up 

 by all the fruit growers, without exception, in any given 

 region, great good would, undoubtedly, follow ; but there is 

 generally one shiftless farmer in every region who will neglect 

 his trees, and thus furnish a supply of worms for all of his 

 neighbors. Experiments that have been made with paris 

 green by Professor Forbes, State entomologist of Illinois, 

 and also at the New York Experiment Station, give every 

 promise that this insecticide will prove of far greater value 

 than anything hitherto recommended. 



Professor Forbes found that the spraying of the trees with 

 paris green in water once or twice in the spring resulted in 

 the saving of seventy-five per cent, of the apples exposed to 

 injury by the codling moth, and he further estimated the cost 

 of the application at ten cents per tree. The proportions 

 that he used were three ounces of paris green to ten gallons 

 of water, while at the New York Experiment Station, one 

 ounce of paris green was used to ten gallons of water. 



The Grape-bei^ry Moth. 

 This insect {Eudemis hotrana, S. V.), Fig. 10, has been 

 known in Europe for more than a hundred years, but first 

 appeared in this country about 1860, in which year it was 



described by Dr. 

 Clemens, and in 

 1869 it was re- 

 described by Dr. 

 Packard, in his 

 excellent "Guide 

 to the Study of 

 Insects," at which 

 time it had 

 reached as far 

 west as Missouri, 



Fig. 10. 



c, moth; b, larva; c, a grape with a discolored spot; d, a grape 

 destroyed by the larva. 



