THE TALL WEB-WORM. 



43 



Latched upon them, but as the migrating swarm became pressed with 

 hunger they finally fell upon these, and even upon plants like the Peach, 

 and Ailanthus, which ordinarily are passed over. Tbey would pounce 

 upon any food, and a rotten apple placed in their way was soon literally 

 swarming with them and sucked dry. 



u In a general way it may be stated that conifers, grapes, and most 

 herbaceous plants are free from their attacks, and it is very doubtful 

 whether the species can mature upon them. 



"The list of plants which follows is arranged according to the relative 

 damage to the foliage in the city of Washington. The three first named 

 are most subject to attack, and, in fact, are almost always defoliated. 



PROPORTIONATE INJURY TO DIFFERENT PLANTS AND SHADE TREES. 



"The damage done in the city of Washington was exceptional, but 

 so was also the general damage throughout the New England States, if 

 not throughout the country. In New England the greater predilection 

 which the species showed for Poplar, Cottonwood, and the ranker grow- 

 ing Willows was everywhere manifest, and so much was this the case that 

 the destruction of the first brood on these trees would have substan- 

 tially lessened the damage to other trees." 



Plants marked 1 have lost from 75 to 100 per cent, of their foliage. 



Plants marked 2 have lost from 50 to 75 per cent, of their foliage. 



Plants marked 3 have lost from 25 to 50 per cent, of their foliage. 



Plants marked 4 have lost from to 25 per cent, of their foliage. 

 Plants marked with two figures have shown the relative immunity or 

 injury indicated by both, the variation being in individual trees. 



Tilia americana L. (American Lin 



den.) 

 Tilia europa?a L. (European Liu- 



den . ) 

 Populus dilatata Ait. (Lombard y 



Poplar.) 

 Ulmns americana L. (American 



White Elm.) 

 llmusfulra Mich. (Slippery Elm.) 

 Prunus armeniaoa L. (Aprtcot.) 

 Alnus maritima Mubl. (Alder. ) 

 Betula alba, L. (White Birch.) 

 Viburnum species. I Haw or Sfoe.) 

 Lonicera species. (Honeysuckles.) 

 Prunus amerieana Marsh. (Wild Red 



Plum.) 

 CelHs oceidentalis L. (Hackberry.) 

 Rosa species. ( Rose.) 

 Gossypium album 11am. (Cotton.) 

 Ccplialantliu* oceidentalis L, (Button 



Bush.) 

 Convolvulus spec. (Morning Glory.) 



1. 



Negundo aceroides Mcench. (Box El- 

 der.) 



2. 



1. 



Populus alba L. (European White 

 Poplar.) 



2. 



1. 



Populus monilifera Aiton. (Cotton- 

 wood.) 



2. 



1-2. 



Populus balsamifcra L. (Balsam 

 Poplar.) 



2. 



1-2. 



Fojmlus tremuloides Mich'x. (Amer- 



2-:?. 





cau Aspen.) 



2-3. 



1-2. 



Fraxinus americana L. (White Ash.) 



2-3. 



1-2. 



Fraxinus excelsior L. (European 



2-3. 





Ash.) 



2-3. 



1-2. 



Sambucus canadensis L. (Elder.) 



2-3. 



1-2. 



Pyrus species. (Cultivated Pear and 



Apple.) 



2-3. 



1-2. 



Prunus arium and cerasus L. (Cher- 



2-3. 





ries.) 



2-3. 



]-4. 



Syringa vulgaris L. (Lilac.) 



2-3. 



1-4. 



Ilex spec. (Holly.) 



2-3. 



2. 



Platanus occidentalis L. (Sycamore. ) 





2. 



Salix species. (Willow.") 



2-4. 



