RECENT PUBLICATIONS 



Some of the Principal Insect Enemies of Con- 

 iferous Forests in the United States. Re- 

 print from Yearbook, U. S. Department 

 of Agriculture, for 1902. By. A. D. HOP- 

 KINS. Pp. 13, illustrated. Washington, 

 Government Printing Office, 1902. 

 Dr. Hopkins states as a noteworthy fact 

 that the most important enemies of conif- 

 erous forests in this country are restricted 

 to a few species of a single genus of beetles. 

 The methods of preventing destructive inva- 

 sions, with descriptions of results of the 

 insects' work, illustrated with numerous 

 plates, together with a description of the 

 insects themselves, forms the basis of the 

 text. 



Insect Injuries to Hardwood Forest Trees. 



Reprint from Yearbook, U. S. Department 

 of Agriculture, for 1903. By A. D. 

 HOPKINS. Pp. 14, illustrated. Washing- 

 ton, Government Printing Office, 1903. 

 Discussion of the insects injurious to 

 hardwood trees is grouped under two heads 

 those injuries which result in the death of 

 the tree, and those which do not materially 

 affect the vitality of the tree, while render- 

 ing its wood commercially inferior. The 

 means of distinguishing the insects and 

 combating their work are given, and in 

 general the pamphlet forms a companion 

 work to the one reviewed immediately 

 above, covering the damage done by insects 

 to the two great classes of forest trees. 



Transactions of the English Arboricultural 

 Society. Vol. VI Part I. Compiled by 

 JOHN DAVIDSON, Secretary and Treasurer. 

 Pp. 128, illustrated. Carlisle, G. and T. 

 Coward, 1905. 



This volume includes the minutes of the 

 twenty-third annual meeting of the English 

 Arboricultural Society, a report of the annu- 

 al excursion, and five contributed articles on 

 forest subjects, together with statements of 

 the work and aims of the Society, and mat- 

 ters of general interest to its members. 

 Perhaps the most interesting portion of the 

 Transactions to American forest students 

 and foresters is the account of the Forestry 

 Exhibition at the Royal Show in 1904, con- 

 tributed by North Wind, Esq. Mr. Robert 

 Anderson, F. S. I, contributes an interest- 

 ing article on "The Production of Conif- 

 erous Timber." The volume is a valuable 

 one, and illustrates by its reports of the 

 society's, flourishing condition the sincere 

 interest generally shown forestry in Eng- 

 land. 



Foreign Trade in Farm and Forest Products, 

 1904. Circular No. 16, Bureau of Statis- 

 tics, Department of Agriculture. Pp. 19. 

 Washington, Government Printing Office, 

 IQOS- 



Here is a mass of valuable statistical mat- 

 ter relating to farm and forest products, 

 tabulated conveniently for reference. With 

 the exception of a brief introductory expla- 

 nation, the entire pamphlet consists of sta- 

 tistical matter. 



Annual Reports of the Department of Agri- 

 culture for the Fiscal Year Ended June 30, 

 1904. Pp. 560. Washington, Government 

 Printing Office, 1904. 

 A general, brief, summing-up of the work 

 of each of the Bureaus, Divisions, and Sec- 

 tions of the Department of Agriculture is 

 included, with a report of the Secretary in 

 the first portion of this volume ; and a de- 

 tailed report from each of the Bureau and 

 Division chiefs comprises the second part. 

 Mr. Gifford Pinchot, Forester, outlines the 

 work of the Bureau of Forestry during the 

 past year and speaks of its progress in 

 efficiency, compactness, and simplicity of 

 its organization, and appends a chapter on. 

 the present and future work of the Bureau 

 during 1905. 



Catalogue of Insect Enemies of Forests and 

 Forest Products at the Louisiana Pur- 

 chase Exposition, St. Louis, 1904. Bulletin 

 No. 48, U. S. Department of Agriculture, 

 By A. D. HOPKINS. Pp. 53, illustrated. 

 Washington, Government Printing Office, 

 1904. 



Dr. Hopkins estimates that an average 

 annual loss of $100,000,000 is occasioned to 

 the forests of this country through the det- 

 rimental or destructive work of insects. At 

 the Louisiana Purchase Exposition there 

 were exhibited 789 specimens of such in- 

 sects, 623 specimens of their work, and 18 

 photographs, illustrating extent of damage 

 done. The Bulletin presented here is in the 

 nature of a catalogue of the exhibit, with 

 explanatory notes, and numerous half-tones 

 and line drawings amplify upon the text. 



Injury to Vegetation by Smelter Fumes. Bul- 

 letin No. 89, Bureau of Chemistry, U. S. 

 Department of Agriculture. By J. K. 

 HAYWOOD. Pp. 23, illustrated. Washing- 

 ton, Government Printing Office, 1905. 

 The investigation described in this Bulle- 

 tin was undertaken at the request of the 

 United States Department of Justice in con- 

 sequence of a suit brought by the United 

 States against the Mountain Copper Com- 

 pany, near Redding, Calif. The general 

 conclusion drawn by the author is that such 

 fumes are injurious to vegetation, and he 

 suggests that they be condensed, and sul- 

 phuric acid formed, for which there should 

 be a ready market. 



