DISEASES OF PLANTS. 443 



Studies in forestry, L. Petkini (Atli J,'. Accad. Econ. Agr. Georg. Firenze, 4. tier., 

 20 (1897), No. 3-4, pp. 275-306). 



Technical and economic studies in forest culture, L. Galloni (Aiti R. Accad. 

 Econ. Agr. Georg. Firenze, 4. ser., 20 (1897), No. 3-4, pp. 307-402). 



Some notes on the life history of forest trees, A. HEIMERL ( Wiener Illus. Gart. 

 Ztg., 1S9S, No. 3, pp. 95-110, figs. 2). 



On forest culture, M. A. Grude (Om Skookultur. Christiania, Norway, 1898, pp. 

 240). 



Tree planting on public streets, C. M. LORWG (Amer. Florist, 14 (1S9S), No. 532, 

 p. 48). — Suggests trees adapted to the purpose. 



Tree planting in desert wastes (Producers' Gaz. and Settlers' Fee. [ West. Austra- 

 lia], 5 (1S9S), No. 3, p. 213). — The author recommends the planting of Acacia arabica 

 iu the desert portions of Australia. The economic uses to which the tree is put are 

 mentioned. 



Our woods and forests, A. C. Forbes (Gard. Cliron., 3. ser., 24 (1898), No. 010, pp. 

 176, 177; 612, p. 213). — Notes are giveu on some of the more interesting facts con- 

 cerning the Crown woodlands of Great Britain. 



The plane tree (Gard. Chron., 3. ser., 24 (1S9S), No. 611, p. 190).— Notes are given 

 on Platanus orientalis and its value as a decorative tree. Several varieties of this 

 species are hriefly described and their relative merits given. 



Report of the Commissioner of Forestry, J. T. Rothrock (Pennsylvania Dept, 

 Agr. Bui. 34, pp. 91-107). — The author describes the present forest conditions of the 

 State and the relation between rainfall, water flow, and forests. Figures are given 

 showing the diminished flow during the autumn months of the Schuylkill River at 

 Philadelphia, in which it appears that between 1816 and 1895 there was a deprecia- 

 tion of more than 60 per cent in the water flow of the stream. 



Forest protection against tidal waves, S. Honda (Col. Agr. [Tokyo], Bid. 3{1S9S), 

 No. 4, pp. 281-298, pis. '.'). — An account is given of the value of foi-ests as a means of 

 protection against tidal waves or floods. 



Practical assistance to farmers, lumbermen, and others in handling forest 

 lands, G. Pinchot (U. S. Dept. Agr., Division of Forestry Circ.21,pp.5). — This circu- 

 lar shows some of the practical results of proper handling of forests and states the 

 conditions on which the Government will cooperate witli forest owners. Tracts of 

 any size from 5 acres up are eligible, the only distinction made being that the own- 

 ers of large tracts which may present more difficult questions will be required to 

 share in the expense of solving them, whileowners of small tracts will receive assist- 

 ance without expense. Two forms of agreement are given and applications can be 

 made at any time. 



DISEASES OF PLANTS. 



Report of the botanist, B. D. Halsted {New Jersey Stas. Bpt. 1897, 

 pp. 263-344, 355-394, figs. 45). — The chief lines of work reported upon 

 are with fungicides on various vegetables and ornamental plants, pre- 

 vention of the sweet-potato soil rot, pear lire blight, peach-root gall, 

 and the diseases of violets. The work with weeds has been continued 

 and an experiment made to ascertain their influence on crop and soil. 



Experiments with turnips (pp. 205-274). — The author has continued 

 the investigations on club root (E. S. B., 0, p. 054). In the experiments 

 in 1897 soil treatments of lime, sulphur, corrosive sublimate, kainit, 

 copper sulphate, and Bordeaux mixture were given, but of these only 

 the lime treatment gave satisfactory results, and this has proved almost 

 10222— No. 5 1 



