1916] DISEASES OF PLANTS. 453 



Measuring and marketing wood-lot products, W. R. Mattoon and W. B. 



Barrows (U. S. Dcpt. Agr., Farmers' Bui. 115 {1916), pp. 48, fiys. 13). —The 

 purpose of this publication is to assist wood-lot owners in securing maximum 

 returns from wood-lot products. Consideration is given to the nature and 

 classification of the wood-lot products, units used in the measurement of 

 timber, scaling timber, estimating standing timber, finding the sale value of 

 standing timber, markets and prices, shipping by rail, when and how to sell, 

 the small sawmill, cooperation in marljeting, how to prevent the deterioration 

 of cut wood-lot products, and practical helps in marketing. 



Lumber markets on the east coast of South America, R. E. Simmons ( U. 8. 

 Dcpt. Com., Bur. Foreign and Dom. Com., Spec. Agents Ser., No. 112 (1916), 

 pp. 121, pis. 15). — This is the first of a series of reports reviewing the lumber 

 markets of South America. The present report deals with the domestic lumber 

 resources of Argentina, Uruguay, and Brazil, and the kinds, dimensions, costs, 

 prices, uses, etc., of imported lumber. Trade methods are discussed, and con- 

 sideration is also given to special lumber products. 



DISEASES OF PLANTS. 



Report on the work of the Bureau of Mycology and Phytopathology for 

 1914, A. Iachevskii (Jaczewski) (Mat. Mikol. i Fitopatol. Ross., 1 (1915), 

 No. 3, pp. 42-51). — In addition to his previous report (E. S. R., 34, p. 842), the 

 author gives a more detailed account of the work done by the personnel of the 

 bureau in 1914. For the most part the results of plant disease investie'atlons 

 are either published already or prepared for a separate publication in the near 

 future, and for this reason they are only briefly stated in this report. 



Experiments to determine control measures for American gooseberry mildew 

 have been continued. Various substances were added to common soda to in- 

 crease its adhesiveness, but the best results were secured by the use of zinc 

 carbonate and green soap. Barnyard manure increased the amount of the 

 disease, while potash checked it. The author recommends an application in the 

 spring of 30 per cent potash at the rate of about i lb. to every 50 sq. ft., fol- 

 lowed by a spray consisting of about i oz. soda and i oz. green soap in about 

 3^ gal. water. This application should be repeated every ten days. 



Work on club root of cabbage consisted in testing a variety of soil treatments, 

 such as fall and spring liming and the application of potassium permanganate, 

 calcium chlorid, and soda as preventives of this disease. Fall liming gave the 

 best results, and is considered worthy of recommendation. Combating weeds, 

 destroying diseased plants as soon as they can be noticed with immediate appli- 

 cation of lime to the place from which they were removed, collecting and burn- 

 ing all stalks after harvest, and plowing in the fall, accompanied by distribution 

 of lime in furrows at the rate of about 800 to 3,200 lbs. to the acre, are practical 

 suggestions, based on three years' experience. 



The work with the so-called " drunk bread " resulted in the isolation from 

 affected grains of two species of Fusarium, F. roseum and F. subulatum, and 

 consequently it appeared possible to outline certain control measures. 



A number of other activities of the bureau are briefly reported upon. 



Fungus parasites of the higher plants in the region of Kharkov and 

 adjacent provinces, A. A. PoTKunfA (Kharkov. Oblast. Selsk. KJioz. Opytn. Sta. 

 Fitopatol. Ota., No. 1 (1915), pp. 120, figs. i9).— This publication is the first 

 part of a work which will eventually cover a complete survey of the cryptogamic 

 parasites of plants in the above-named region of the Russian Empire. The 

 present report includes three lower classes of fungi, namely, Schizomycetes 

 (Bacteria), Amcebina (Monadinese), and Phycomycetes. 



