30 WORCESTER COUNTY HORTICULTURAL SOCIETY. [1906 



in the tree. When it is not convenient to spray this method 

 can be used. I dislike to burn with kerosene. It is not a good 

 practice because the injury to the branches is considerable and 

 frequently the caterpillars get away so it is not an effective 

 manner of destroying these caterpillars. 



There are other types of insects. Examine your trees care- 

 fully where no spraying is done. You will be surprised to find 

 how few perfect leaves there are upon the trees. When the 

 leaves are skeletonized it is the work of the pear slug. This 

 can be controlled by this spraying with arsenate of lead. It is 

 wonderful to find how few perfect leaves there are and it is 

 surprising that there is anything left upon the trees when we 

 consider the number of insects that are preying upon the 

 foliage. 



I will speak next of some of the insects that injure the fruit. 

 The coddling moth is the one insect that is responsible for the 

 wormy apples and I think our country never had such a visita- 

 tion of the coddling moth as this last year. The loss is not less 

 than 126,000,000 annually in New York State and the loss to 

 the nation is not less than 500 million dollars annually. 



The coddling moth is a very beautiful, delicate moth, but it is 

 a night flyer. They are rarely found. They have to be sought 

 for in the night and I think those not trained in their identifica- 

 tion would never come across one. 



As soon as the blossoms fall from the apple trees in the 

 spring, this moth comes forth and flies all through the orchards 

 and deposits its eggs upon the outside of the apple. Each 

 moth lays about fifty eggs but only one upon an apple. Other 

 moths, however, visit the same apple. In a few days these 

 eggs hatch and then the young moth crawls down to the calyx 

 end and lives there a number of weeks. It then bores its way 

 out, and in so doing makes the holes in the apple which so 

 seriously affects its value that these apples are absolutely re- 

 jected in the markets. 



The treatment for this moth is not diflicult but needs to be 

 done at just the right time. If the blossoms have nearly all 

 fallen they should be sprayed again with arsenate of lead of the 



