106 NEW YORK STATE MUSEUM 



affected. There was also general injury in North Troy or 

 Lansingburg, many of the trees having practically all the foli- 

 age destroyed. The elms of Hoosick Falls suffered greatly, and, 

 to a less extent, those of Valley Falls and Johnsonville. 



The elms of both Stillwater and Schuylerville were very 

 severely injured, many having the foliage practically destroyed. 

 There was serious and general injury at Ballston Spa and con- 

 siderable damage at Saratoga Springs in spite of the spraying. 

 The trees of Fort Edward and Hudson Falls were practically 

 defoliated by the insect, especially near the centers where the 

 infestation is of longest standing. A number of the elms in 

 these communities had died and others were in a greatly weak- 

 ened condition owing to the injuries of successive years. The 

 damage at Glens Falls was evident though not so severe, the 

 difference undoubtedly being due to the spraying of the past 

 season. 



An examination of the elms both in the city of Albany and 

 along the Delaware and Hudson railroad shows an interesting 

 condition. The trees on the streets traversed by trolleys are, 

 as a rule, more severely injured by the beetle than those on 

 adjacent thoroughfares. The elm leaf beetle has not obtained 

 a foothold west of Slingerlands on the Susquehanna division 

 of the Delaware and Hudson railroad. This is a section not 

 traversed by the electric car. A very different condition ob- 

 tains on the southern portion of the Saratoga and Champlain 

 division of the Delaware and Hudson railroad comprising a sec- 

 tion which has for some years had electric car service. Evi- 

 dences of severe injury are to be noted along most of the route 

 north of Glens Falls, manifest exceptions being Gansevoort, 

 Round Lake and Lake George. The two former are off the 

 line of the electric cars and the latter has probably not had 

 trolley service for a sufficient time to allow general infestation. 

 The elm leaf beetle, as is well known, is very prolific and natur- 

 ally quite local in its habits. The electric cars, traversing as 

 they do many of the tree-lined streets of various communities, 

 afford abundant opportunities for the collection and dissemina- 

 tion of the beetles. The distribution of the badly infested areas 

 lends weight to the belief that the electric car is an important 

 factor in the dissemination of this pest. 



There are numerous other localities not served by the electric 

 lines where injury has been severe, especially in the last few 

 years. Even comparatively isolated groups of elms in front of 



