1917] DISEASES OF PLANTS. 645 



preservative treatment; uses; methods of identification; and species descrip- 

 tions. Data on the mechanical properties of 34 Philippine woods, shipping 

 weights, grading rules, and lists of woods based on the durability of sapwood 

 are appended. 



The trees of North Carolina, W. C. Coker and H. R. Totten (Chapel Hill, 

 N. C: W. C. Coker, 1916, pp. 106). — This work contains popular descriptions of 

 the trees of North Carolina, including a key for the identification of the species. 



Western yellow pine in Oregon, T. T. Mungek (U. S. Dept. Agr. Bui. ^18 

 {1911), pp. 48, pis. 7). — An account of the western yellow pine in Oregon, dis- 

 cussing its distribution and abundance, distinguishing characteristics, climatic 

 and soil requirements, reproduction, effects of fire, sources of injury other than 

 fire, character of the stands, growth, characteristics of the wood, utilization of 

 yellow pine forests, logging and milling, planting, and management. Volume 

 tables for western yellow pine, instructions for marking timber in the yellow 

 pine region, and instructions for brush burning under the selection system of 

 cutting are appended. 



Hybrids and other new chestnuts for blight districts, W. Van Fleet 

 {North. Nut Growers Assoc. Proc, 7 {1916), pp. 54-58). — A paper on this sub- 

 ject read before the annual meeting of the Northern Nut Growers' Association, 

 Washington, D. C, in September, 1916. 



Fourth biennial report of the state forester, J. C. Van Hook {Blen. Rpt. 

 State Forester, Mont.. 4 {1915-16), pp. 55, pi. 1, figs. 15). — A report of activities 

 dui'ing the fiscal years 1915 and 1916, including information relative to timber 

 resources and timber industries of the State, qualities and uses of the more 

 important Montana woods, progress in wood preservation, fire protection, in- 

 structions for farm and city tree planting, and brief descriptions of some of the 

 mountain forests of Montana as places for recreation. 



Report of the state forester to the State Board of Forest Commissioners 

 for the period ended November 30, 1914, E. W. Feeris {Ann. Rpts. Wash. 

 State Forester, 1913-14, pp. 29). — This report deals primarily with private, 

 state, and federal activities in forest protection in Washington forests during 

 the biennial period ended November 30, 1914. 



Annual reports Washington state forester for the years ending November 

 30, 1915 and November 30, 1916, E. W. Ferris and F. E. Pape {Ann. Rpts. 

 Wash. State Forester, 1915-16, pp. 41, pls. 6). — These reports deal primarily 

 with fire protection work conducted during 1915 and 1916. 



Annual progress report upon state forest administration in South Aus- 

 tralia for the year 1915—16, W. Gnx {Ann. Rpt. State Forest Admin. So. 

 Av^t., 1915-16, pp. IS, pis. 6). — A statistical review relative to the administra- 

 tion and management of the state forests of South Australia, including data on 

 alterations in forest areas, planting and other forest operations, revenues, ex- 

 penditures, etc. 



DISEASES OF PLANTS. 



Prophylaxis in vegetable pathology, O. Comes {La ProfUassi nella Patologia 

 Vegetate. Naples: R. 1st. Incoragg. Napoli, 1916, pp. IIS). — This comprises a 

 short introduction, historical in character, and two main sections. The first of 

 these deals with susceptibility as related to climate, soil, cultivation, and nitro- 

 gen manuring. The second deals with resistance as related to the various 

 regions of the plant, to the chemistry of the tissues and juices, to oxidases, to 

 selection, and to phosphate fertilizers. 



Diseases of cultivated plants. Nonparasitic diseases, G. Delacroix. Para- 

 sitic diseases, G. Delacroix and A. Marblanc {Maladies des Plantes Culti- 

 v6es. Maladies non Parasitaires. Maladies Parasitaires. Paris: J. B. Balli^re 



