TIIK BROWN-TAIL MOTH. 



59 



Blue ash, — Fraxinu.s quadran- 

 gulata. 



Black ash, — Fraxinus sambit- 

 ci folia. 



Common lilac, — Syrinya vul- 

 garis. 



Japanese lilac, — Syringa Ja- 

 230)1 ica. 



Slippery elm, — Vlmus fuhnis. 



White elm, — Ulmus Ameri- 

 cana. 



Cork elm, — Ulmus racemosa. 



English elm, — Ulmus cam}jes- 

 tris. 



Scotch elm, — Ul m u s m on- 

 tana. 



Red mulberry, — Morus rubra. 



Tartarian mulberry, — Morus 

 Tartarica. 



Sycamore, — Platamis occiden- 

 talis. 



Black birch, — Betula lent a. 



Yellow birch, — Betula, lutea. 



White birch, — Betula j^opuli- 

 folia. 



Paper birch, — Betula j^apyrif- 

 era. 



Cut-leaved birch, — Betula alba, 



var. laciniata. 

 Hop-hornbeam, — Ostrya Vir- 



ginica. 

 White oak, — Quercns alba. 

 Swamp white oak, — Quercvs 



bicolor. 

 Red oak, — Quercus rubra. 

 Scarlet oak, — Quercus coccinea. 

 Black oak, — Quercus coccinea^ 



var, tinctoria. 

 Pin oak, — Quercus palustris. 

 Scrub oak, — Quercus ilicifolia. 

 Chestnut, — Castanea s a t i v a , 



var. Ainericana. 

 Blue beech, — Carpinus Caro- 



liiiiana. 

 American beech, — Fagus fer- 



ruginea. 

 Purple beech, — Fagus sylim- 



tica, var. jmrpurea. 

 Crack willow, — Salix fragilis. 

 White willow, — Salix alba. 

 Weeping willow, — Salix Baby- 

 lon ica. 

 Heart-leaved willow, — Sal i x 



cor data. 



Remedies. 



ITc/O Destrnclion. 



In the case of the brown-tail niotli, action looking to the 

 prevention of damage by the caterpillars is of more impor- 

 tance than the application of remedies after the insects haxc 

 commenced feeding. With this insect the traditional "' ounc** 

 of prevention" is worth many "pounds of cure." I''or 

 uearl}^ six months, or, generiUy speaking, from the lirst ol' 

 October to the first of April, tliese insects are massed to- 

 gether within their silken winter webs. These webs, as 

 already pointed out, are attached to the tips of the twigs, 

 are grayish-white in color, and easily seen when the foliage 



