SUGGESTIONS FOR OWNERS OF WOOD LOTS IN NEW ENGLAND. 



CLASS III. Species that are not particularly favored, but upon which a small propor- 

 tion of the gipsy-moth larvx may develop. 



Beech, Blue. 

 Birch, Black. 

 Birch, Yellow. 

 Cherry, Black. 

 Cherry, Choke. 

 Cherry, Wild red. 

 Cotton wood. 

 Elm. American. 

 Elm, Slippery. 

 Gum, Black. 



Hickory, Bitternut. 

 Hickory, Mocker-nut. 

 Hickory, Pignut. 

 Hickory, Shagbark. 

 Hop Hornbeam. 

 Maple, Red. 

 Maple, Silver. 

 Maple, Sugar. 

 Poplar, Silver. 

 Sassafras. 



CLASS IV. Species that are unfavored food for gipsy-moth larvx. 



Arborvitae. Laurel, Mountain. 



Ash. Black. Locust, Black. 



Ash, Red. Locust, Honey. 



Ash, White. Maple, Mountain. 



Balsam Fir. Maple, Striped. 



Butternut. Mulberry, Red. 



Cedar. Red. Sheepbeny. 



Cedar, White. Sycamore. 



Dogwood, Flowering. Tulip. 



Hackbeny. Walnut. Black. 

 Holly. American. 



The gipsy moth is such a serious pest over a large portion of New 

 England that the varying extent to which it feeds on trees of different 

 species is a very important factor in determining what trees shall 

 be removed and what ones preserved in thinning. Other factors 

 affecting such determination are the commercial value, rapidity of 

 growth, and adaptability to different soil conditions of different 

 species of trees. With these several factors and 75 species of trees 

 occurring in a multitude of combinations, it can be seen how impos- 

 sible it is to outline any plan of thinning which will be applicable in 

 all cases. An attempt is made here, however, to indicate in a general 

 way some of the qualities of each species which must be considered 

 in thinning. 



TREATMENT OF TREES IN CLASS I. 



Beginning with Class I of the foregoing classification, it is found to 

 be composed of 26 species which are favored as food by gipsy-moth 

 larvae. Ten of these species, namely, mountain ash, gray birch, river 

 birch, boxelder, scrub oak, service berry, dwarf sumac, staghorn sumac, 

 glaucous willow, and witch hazel are of little commercial value and 

 should be removed. 



Ten of the species in this class are oaks, including the scrub oak 

 just mentioned. Oaks growing on light soils and rocky ridges are 

 usually not very vigorous, grow slowly, and suffer severely from 

 gipsy-moth attack. 



