1916] DISEASES OP PLANTS. 347 



to Sugi (Cryptomeria japonica) and Hinoki (Chamcecyparis oMusa) Seedlings 

 and the Efficacy of Fertilizers (pp. 36-41), by S. Moriya ; Investigation of the 

 Transverse Strength in Wood (pp. 42-54), and Determination of the Calorific 

 Povi'er of Wood (pp. 55-58), by K. Moroto; Experiment of the Electric Resist- 

 ance in Wood, by J. Hiruma (pp. 59-65) ; Charcoal Burning in Japan (pp. 

 66-76), and Condensation of Wood Vinegar in Charcoal Burning in Japan (pp. 

 77-80) ; by S. Mimura ; Tapping of Lac, by M. Moriya and H. Shirasawa (pp. 

 95-108); Notes on "Shiitake" {Cortinelhis shiitake) Culture (pp. 109-114), 

 Researches on the Culture of " Matsudake " (C. edodes) (pp. 115-122), and Re- 

 searches on the "White Judas' Ear" (Tremella fuciformis) (pp. 123-126), by 

 S. Mimura ; Notes on the Analytical Interpretation of Growth Curves for Single 

 Tree and Stands and on Application for the Construction of Yield Table for 

 Sugi (C. japonica) (pp. 151-202), and Investigation on Form Height Tables 

 for the Principal Conifers and Some Broad-Leaved Trees in Japan and Bases 

 on Which They May Be Constructed (pp. 203-221), by W. Terazaki. 



An inventory of Florida's forests and the outlook for the future, R. M. 

 Habpee (Fla. Quart. Bui. Dept. Agr., 26 {1916), No. 2, pp. 5-24, fiffS. 12).— A 

 survey of the forests of Florida v?ith reference to the area and density of the 

 forests, their distribution and character, frequency of fire in different types, 

 composition, prevalence of species, rate of growth and composition, and the in- 

 fluence of fire and agriculture on the permanence of forests. 



Biennial report of the forestry commission for the years 1913—14, W. R. 

 Bkown, J. E. ToLLES, and B. F. Greer {Bien. Rpt. Forestry Com. N. H., 1913-14, 

 pp. 114, pis. 14)- — A progress report of operations conducted by the forestry 

 commission, principally along the lines of forest fire protection, reforesting 

 waste and cut-over land, acquisition and management of state forest lands, 

 and educational work among woodland owners. 



Report of the director of forestry for the year 1915, R. H. Campbell et al. 

 {Dept. Int. Canada, Rpt. Dir. Forestry, 1915, pp. 102, figs. 25).— The report 

 includes a review of the several lines of work carried on during the year, and 

 detailed reports of the work of the tree planting division and on the forest 

 reserves in the separate Provinces, together with the report of the Forest 

 Products Laboratories of Canada. 



Forest products of Canada, 1914. — Lumber, lath, and shing'les, compiled 

 by R. G. Lewis and W. G. H. Boyce {Dept. Int. Canada, Forestry Branch Bui. 

 56 {1916), pp. 62. pi. 1). — A statistical report on the production of lumber, lath, 

 and shingles in the various Provinces of Canada during 1914, including infor- 

 mation relative to the quantities of each species of wood used. 



Economic forest products, C. E. C. Cox {Ann. Rpt. Bd. Sd. Advice India, 

 1914-15, pp. 124-1S2). — A progress report for the year 1914^-15 relative to 

 investigations dealing with forest products. 



DISEASES OF PLANTS. 



Wound parasitism and predisposition, F. Heske {Centbl. Qesam. Forstw., 40 

 {1914), ^0. 11-12, pp. 456-461). — This is a discussion of the relations of host, 

 parasite, enzym, etc., concluding with the statement that wound parasitism re- 

 quires a real predisposition of the host plant to attack, consisting in an altera- 

 tion of the natural state of the host as a primary or contributory condition. 

 The situation as regards the plant may also be such as to render attack com- 

 paratively easy but yet not inevitable. This predisposition consists not only 

 in the susceptibility of the plant, but may relate to influences acting upon the 

 infective bodies also. 



