IV CONTENTS. [Vol. 37 



Page. 



Timber-estimating methods used in eastern North Carolina, Krinbill 747 



Report of the State forester for 1916, Elliott 747 



Forestry, Viquesney 747 



Law of the woods and yerbales 747 



Amendments to the Central Pro%inces Forest Manual (third edition) 747 



On the sun and shade leaves of some trees, Doi 747 



The carob and its rational culture, Amico 747 



The black wattle industry. — Acacia mollissimxi, A. decurrensyax. mollis, Sim. . . 748 



Catalogue of wood si)ecimens exhibited in the economic section, Narasinga Rao. 748 



The grouping of ties for treatment, Winslow 748 



Paper and wood pulp industry. Ruff 748 



Forest products of Canada, 1916. — Pulpwood 748 



DISEASES OF PL.\N'TS. 



New or interesting species of fungi, House 748 



Texas parasitic fungi. — New species and amended descriptions, Tharp 748 



Uredinales of Porto Rico based on collections by Whetzel and Olive, Arthur. . 749 



A short-cycled Uromyces of North America, Bisby 749 



A systematic and physiological study of rusts. Reed, Hursh, and Brentzel 749 



The physiological relation of the powdery mildews to their hosts. Reed 749 



Control of Fhylophthora infeslans in Xochimilco, Madariaga and Villarreal 749 



Economic hosts of Sclerotinia libertinna in tidewater Virginia, McClintock 749 



A new strain of Puccinia graminis, Stakman and Piemeisel 749 



Grain-smut investi^tion and control, Reed 750 



Ecological observations on Ustilago i.ese. Potter and Melchers 750 



The formaUn treatment for controlling oat smut, Krall 750 



Some new facta concerning wheat smut, Heald 750 



The prevention of wheat smut, Woolman 751 



Puccinia graminis on wheat kernels, Hungerford 751 



The Pseudopeziza leaf spot diseases of alfalfa and red clover, Jones 751 



Bean mosaic, Stewart and Reddick 751 



Lima bean mosaic, McClintock 751 



The celer>'-rot bacillus, Wormald 751 



Development of the aecial stage of Nigredo on red clover, Melhus and Diehl 752 



The fecial stage of the red clover rust, Da\-is and Johnson 752 



Two transmissible mosaic diseases of cucumbers, Jagger 752 



A Gnomonia on eggplant, Edgerton 752 



A malnutrition disease of Irish potato and ita^control, Edson and Schreiner. . . 752 



The economic importance of mosaic of potato. Murphy 752 



Strains of Rhizoctonia, Rosen baum and Shapavalov 753 



Will Spongospora subterranea prove serious in Virginia? McClintock 753 



Host plants or Synchytrium endobioticum, Cotton 753 



Bordeaux spray for tip bum and early blight of potatoes, Erwin 753 



Seed potato certification in Nova Scotia, Murphy 753 



Root disease of sugar cane, Johnson 753 



Tobacco diseases and their control, Johnson 753 



A CoUetotrichum leaf spot oi turnips, Hi^ns 753 



Temperature relations of apple rot rungi. Brooks and Cooley 754 



Black root rot of the apple, Fromme and Thomas 754 



Treatment of apple canker diseases, Whitten 754 



Jonathan spot, Brooks and Cooley 754 



Control of apple scab by bleaching powder, Brock and Ruth 755 



Observations on pear blight in Illinois, Stevens et al 755 



Studies on peach yellows and little peachj Blake, Cook, and Schwarze 755 



Second progress report on leaf spot of cherries and plums in Wisconsin, Keitt 755 



A new disease of cacao, Turconi 755 



Diseases of chayote, Ramirez 755 



Mango disease in Yucatan, Ramirez 755 



Additional suggestions on treatment of hazel blight, Waite 755 



Winterkilling, sun scald, or sour sap of pecans, McMurran 755 



Notes on pecan diseases, McMurran 756 



Blight and melaxuma of walnut. Beers 756 



An investigation of forest tree diseases. Reed et al 756 



Boleti and mycorrhiza upon forest trees, Pennington 756 



Blight-resistant chestnuts from China, Corsan 756 



Breeding chestnuts for disease control , 756 



