818 JOURNAL OF FORESTRY 



fact that western red cedar, which he calls canoe cedar, is occasionally 

 used for shingles, and so on, ad infinitum! 



Following the list is a discussion of the grain, color, odor, and weight 

 of wood, which is well written, being appropriated bodily from Bulletin 

 lo of the Division of Forestry, to whom no credit is given for either 

 the text or the illustrations. This is followed by a chapter on the 

 "Enemies of Wood," which was also obtained in a similar manner. 



The chapters on the seasoning of wood show that the study of Forest 

 Service literature and other literature is of value, for the author appar- 

 ently has a good abstract grasp of the situation. The final chapters, on 

 the types of dry kilns and dry-kiln accessories, are well illustrated with 

 illustrations supplied by dry-kiln manufacturers. B, L. G. 



Control of the Gipsy Moth by Forest Management. Part I. The 

 Gipsy Moth in Woods. By G. E. Clement. Part II. Management of 

 Typical Woodlots Infested with the Gipsy Moth in the White-pine Re- 

 gion. By Willis Munro. Bulletin 484, U. S. Department of Agricul- 

 ture. April, 1917. Pp. 54. 



The gipsy moth was first liberated in New England about 1869. 

 Since 1888 it has become a serious pest on shade, fruit, and forest trees. 

 "Satisfactory means of protecting the first two classes of trees have 

 been developed, but they are too expensive to be practicable in the case 

 of forest trees." The fact that "foliage of some species of trees is 

 more acceptable as food to gipsy moth caterpillars than that of other 

 species," and that "caterpillars in the first stage of their development 

 do not eat the foliage of conifers, except tamarack," opens up a field 

 for the employment of forest management in controlling the gipsy 

 moth. Since 191 2 an investigation has been in progress under a co- 

 operative agreement between the Bureau of Entomology and the Forest 

 Service to determine "in what proportions trees of different species can 

 be associated to form stands which will not be subject to gipsy moth 

 ravages" and "the best method of converting existing stands into others 

 better able to resist attack." The field work is based on sample plots 

 established to represent a variety of conditions. This bulletin is in the 

 nature of a preliminary report. Details of the behavior of the gipsy 

 moth in the woods are given and the composition and condition of the 

 woods in the infested territory discussed. A colored map showing the 

 boundaries of the infested district with relation to the four forest re- 

 gions is included. In presenting this map a curious mistake has been 

 made by assigning the Connecticut River valley through Massachusetts 



