84 MASSACHUSETTS HORTICULTURAL SOCIETT. 



five quarts ; carbolic acid, two or tliree quarts ; aud water, oue 

 gallon. This is boiled together and afterward mixed with one 

 hundred gallons of water. 



The Wood Leopard Moth {Zeuzera pyrina) was first noticed by 

 him in the New York Parks in 1884, when the gardeners brought 

 him a larva which they had taken from an ehn limb. The female 

 of this insect probably inserts an egg at the base of a leaf or 

 node of the twig, and the young larvae enter the twigs at that point. 

 As it increases in size, it bores to the lower part of the branch, 

 or leaves it and migrates to another branch or to the trunk. 

 From a small maple three and one-half inches in diameter, 

 Professor Southwick said he had taken thirty-two borers of this 

 destructive insect, and that in the city parks they had already 

 been found in over one hundred species of trees and shrubs. 

 The remedy is to destroy all branches that are affected or broken 

 off, as far as possible, and to inject bisulphide of carbon into 

 their burrows, and putty up the hole. Their burrows can be 

 easily found, as the borer throws out the frass and this can be 

 seen at the base of the tree or on the trunk and limbs. Professor 

 Southwick said, the great secret of success with spraying com- 

 pounds and insect subjection is in preventive measures ; that is, 

 treating the affected plants before the insects have spread over the 

 entire foliage, and following it up by repeated applications as the 

 cases in hand required. 



The Rose-chafer or Rose-bug {Macrodactylus subspinosus) is 

 described by Dr. T. W. Harris, in his work on " Insects Injurious 

 to Vegetation," as " one of the greatest scourges with which our 

 gardens and nurseries have been afflicted." As it breeds below 

 the surface of the earth, we have to deal with it only in its 

 beetle form, and during a period of about forty days from the 

 second week in June, each year. The most reliable methods of 

 treating them are, first, by hand-picking into a dish containing 

 kerosene, and, second, by jarring, the tree, shrub, or vine upon which 

 they are feeding ; this frightens them and they instantly let go 

 their hold on the plant and drop to the ground ; but we can catch 

 the falling insects upon cotton sheets (previously arranged under 

 the plant like an inverted umbrella) and then kill them in 

 kerosene. This should be done in the earlier hours of the morn- 

 ing when the beetles are less active, as during the warmer part of 

 the day they will be quicker on the wing and escape. 



