ELM LEAF BEETLE. 825 



they become very active in spring and dropping them into the 

 fire, hot water or kerosene to kill them. 



OUTFIT FOR SPRAYING ELM TREES. 



The barrel hand-power pump can be used for spraying small 

 trees or for a limited number of large trees, but if one expects 

 to make a business of spraying street trees, it will pay to procure 

 a power sprayer; this may be a steam or gasoline engine with 

 pump; and still another kind is the "Niagara Gas Sprayer," 

 which utilizes cylinders of carbonic acid gas to furnish pressure, 

 thus doing away with a pump. Each large village and city should 

 have at least one power sprayer that can be put to immediate use 

 for spraying street or park trees. Strong one-half inch hose 

 should be provided in long lines of from fifty to two hundred 

 feet, and from four to six of these can be attached to each 

 power sprayer. Even a larger number might be attached, but 

 while in operation some workmen would be in the way of others, 

 so that nothing would be gained. Mr. H. L. Frost of Boston, 

 who is in the spraying business, informed the writer that four 

 lines of hose is about the most economical number for each out- 

 fit. Each hose is furnished with an extension rod with closing 

 valve at the lower end and a cluster of nozzles at the upper end. 

 These rods should be of different lengths, from four to twelve or 

 fourteen feet for the dififerent kinds of work. Any of the stand- 

 ard nozzles such as "Vermorel," "Mistry," or "Spraymotor" 

 will be found satisfactory, and if several are used together in a 

 cluster one is able to cover more leaf surface in a given time. 



For getting about in tall trees it will be necessary for the men 

 to be provided with climbing irons and extension ladders. 



On account of the serious condition of the trees throughout 

 the state, and the many inquiries and misleading letters in the 

 newspapers from individuals, the following statement was given 

 to the press in July : * 



Many elm trees in various portions of the city have lost nearly 

 all their leaves from the attacks of the elm leaf beetle. The 

 injured leaves have been dropping for several days, and the 

 trouble has been aggravated by the extreme drought. Had it 



