oCC XEW JERSEY AGRICULTUEAL COLLEGE 



larviP aiul the adults wore killed, but that the cocoous, in which 

 state tlic insects largely were, were not penetrated. On August 

 23d began the ti-eatment of the sugar maples by dry brushing. 

 One man with a house broom cleaned the trunk to a height of 

 about eight feet ; another man with a bristle bnish, fastened to a 

 twelve-foot pole, cleaned to a height of about fifteen feet, and a 

 third num with a hand brush and ladder cleaned the rest of the 

 tree. By this means every sugar maple in East Orange was 

 bnished. Some larvte escaped, and I waited until the leaves fell 

 and the larva* of the last brood took to the trunks, and then I 

 sprayed the trunks and main limbs of the trees on several trees 

 with Kill-O-Scale. During the w^inter the trees showed little trace 

 of larva\, but this spring I noticed that some of the trees were cov- 

 ered with a few larvic again. On August 6tli of this year we began 

 washing the trunks of the sugar maples that showed some scale 

 with Kill-0-Scale, 1 to 20, and treated the trees on about half a 

 dozen streets that had a predominance of sugar maples. The result 

 has been that almost no females were found on the leaves in the 

 latter part of the summer and no leaves fell, as had l)een the case 

 of the year before. The trees are clean now," 



"The cottony maple scale I found was present in very snuill 

 nnnd)ers. The trees that were treated by means of the solid jet of 

 water to break up the egg clusters in 1905, as explained to you 

 before, shoAved almost no adult females when examined this spring. 

 Some trees on other streets showed the insects more numerous, but 

 not in sufiicicntly large numbers to make it necessary to do ajiy 

 fiiilitino' aa'ainst them. 



"The tussock moth was present in very small nundxM's.. The two 

 pickings of egg clusters of the two broods in 1005 seemed to have 

 cleaned them. On June 13th began spraying with arsenate of 

 lead some linden trees that we had set out in the eastern section of 

 the city and collected egg-masses on some larger trees in that part 

 of the town. There was no appearance of the second brood in any 

 way to call for work against them. 



"The elm leaf beetle was present in a general way all over the 

 city, but not as a very bad pest, excepting on some trees here and 

 there. On July 9th began to spray the elms on a few streets with 

 arsenate of lead. Of course, there was not much that could be 

 done at that time, as the insects were near the time of pupation, 

 and all the damage had been already done. 



