452 EXPEEIMENT STATION BECOHD. (Vol.37 



the following classes: Species that are favored food of gipsy moth larvae in all 

 their stages, species that are favored food for gipsy moth larvse after the earlier 

 larva stages, species that .-ire not particuhirly favored but upon which a small 

 proportion of the gipsy moth larvre may develop, and species that are unfavored 

 food for gipsy moth larvse. The suggestions herein given constitute, in a gen- 

 eral way, a guide for the thinning of the above classes of trees in New England 

 woodlots, with reference both to the utilization of the wood and the protec- 

 tion of the trees from gipsy moth attacks. 



Tree planting needed in Texas, J. H. Foster and H. B. Kbause (Bui. Agr. 

 and Mech. Col. Tex., 3. ser., 3 (1917), No. 1, pp. 32, figs. 12).— A popular treatise 

 on tree planting for windbreaks, shelter belts, fence posts, and fuel, as well as 

 planting in streets, city parks, and school and home grounds. 



Report of committee on forestry, L. A. Thurston et al. (Proc. Hatcaii. 

 Sugar Planters' Assoc, 36 (1916), pp. 333^68). — A report of tree planting and 

 other forest activities of the Hawaiian Sugar Planters' Association, including 

 a report by C. S. Judd upon the present status of forestry in Hawaii. 



Douglas fir shipbuilding, H. B. Oakleaf ([Por{land, Oreg.], 1916, pp. 9, figs. 

 2). — A general account of the utilization of Douglas fir in shipbuilding. 



Brazilian woods: Their utilization for the manufacture of wood pulp 

 (Jour. Forestry, 15 (1911), Xo. 5. pp. 62.i-627 ).—Th\s is a reprint of an article 

 from the London Times, giving analyses of a number of woods suitable for wood 

 pulp, together with information relative to the volume and distribution of these 

 woods, conditions, and estimated cost of exploitation, etc. 



The purchase of pulpwood. — Some suggestions, C. P. Winslow and R. 

 Thelen ([Madison, Wis.], 1916, pp. 8, figs. i). — A paper read before the Tech- 

 nical Association of the Pulp and Paper Industry at a meeting held at Columbia 

 University, New York City, on September 28, 1916. 



DISEASES OF PLANTS. 



Fungus and bacterial diseases, W. Noweix (M'est Indian Bui., 16 (1916), 

 No. 1. pp. 17-25, 28. 29). — This is a descriptive and tabular account of the dis- 

 tribution and severity, during 1915, of fungus and bacterial di-seas-es. including 

 root disease (Marasmius sacchari), rind fungus (ilclanconium sacchari), red 

 rot (CoUctotrichum falcatum), pineapple disease (Thi^^laviopsis paradoxa), 

 and Cephalosporium sacchari of sugar cane; anthracnose (CoUctotrichum 

 gossypii), We.st Indian leaf mildew, a bacterial boll dl.«jease, angular leaf spot, 

 black arm, and other diseases of cotton; root disease {Rosellinia pcpo), canker 

 (Phyitophthora faberi), black pod rot (P. faberi), brown pod rot ( I^asiodiplodin 

 theobroyno') , dleback and stem diseases (L. thcobrom<F), pink disease (Cor- 

 ticium salmonicolor) , horse-hair blight (ifarasmius sarmcntusus) and other 

 diseases of cacao; black root disease (Rosellinia spp. ), reil root disease 

 (Sphcrrostilbe sp. ), pink disease (C. salmonicolor), and an unidentified root 

 or collar disease of limes and citrus trees, and other diseases of limes; root 

 disease (M. sacchari) and white rust (Albugo (Cgstopus) sp.) of sweet potatoes ; 

 bud rot, root disease, and leaf diseases ( Pestalozzia palmarum) of coconuts; 

 brown ru.«;t (Puccinia maydis), smut (Cstilago zea), and root disease of Indian 

 corn; rust (P. purpurea) and smut (Sphacelotheca sorghi) of sorghum and 

 Guinea corn; root disease (Sclerotium sp.), leaf rust (Credo arachidis), and 

 leaf spot (Cercospora personata) of peanuts; bacterial rot and damplng-oflf of 

 onions ; and tuber and wilt diseases of yams. 



The wet year, 1915, was highly favorable to fungi parasitic on scale Insects. 

 Phanerogamic parasites noted include Cuscuta americana, Cassytha flliformi*. 



