8 SUGGESTIONS FOK OWNERS OF WOOD LOTS IN NEW ENGLAND. 



of fuel, but they also produce excellent grades of lumber. With fuel 

 of this class in great demand, there will be a temptation to cut young 

 trees of this species. Dead, dying, and defective trees may well be 

 removed now, but young and vigorous trees should be left to grow to 

 larger and hence more valuable sizes. 



TREATMENT OF TREES IN CLASS IV. 



Class IV is composed of 21 species of trees on which the gipsy moth 

 does not feed, or if it does, the amount is so slight as to be entirely 

 negligible. Stands composed of trees of this group alone or combined 

 with trees of Class II need cause no anxiety whatever as far as gipsy- 

 moth attack is concerned. Flowering dogwood, mountain laurel, 

 mountain maple, striped maple, and sheepberry have little or no com- 

 mercial value locally, and if large enough could well be cut for cord- 

 wood at this time. 



Arborvitse, Hack ash, and white cedar occur usually in or near 

 swamps. They need no consideration as fuel. 



Butternut, red cedar, locust, honey locust, and sycamore all require a 

 large amount of light, for which reason they occur rarely in mixed 

 woods, and they are of little importance as fuel. 



Red ash, Jiackberry, American holly, red mulberry, tulip, and black 

 walnut are so rare as to require little consideration. 



In this region of degenerate woods, cuttings or thinnings among 

 young trees should almost always be made with a view to improving 

 the quality of the trees left, or the future growth. This means that 

 woodland should be kept fully stocked, but not crowded, with 

 vigorous trees of the most valuable species. If inferior trees are cut 

 out, care should be taken to protect seedlings and saplings of better 

 species which may be on the ground, for otherwise, in the case of 

 deciduous trees, sprouts will grow vigorously, and the same old con- 

 ditions will reappear. When young growth of desirable species is not 

 present, and no provision can be made for introducing better trees, it 

 may often be better to leave the existing stand than to cut it. 



It is realized that the foregoing suggestions can serve only in a very 

 general way as a guide for thinning, but it is the desire of the Bureau 

 of Entomology of the United States Department of Agriculture to aid 

 the woodland owners of this region in every possible way, and the 

 writers would be pleased as far as possible to confer with any owner 

 in this region who is seriously interested and will apply to them in 

 person or by letter at Bureau of Entomology office, 964 Main Street, 

 Melrose Highlands, Mass. 



