640 EXPERIMENT STATION RECORD. 



with recommendations concerning their exploitation and utilization. Part 2 

 consists of a hundred botanical drawings illustrating 158 species. 



Forest statistics (Canada Yearbook. 2. sci:, lOOS. pp. 106-113). — Statistics 

 are given for the various provinces of Canada showing the production of timber, 

 logs, wood, and minor forest products for the decennial periods 1871-1901, the 

 value of the various forest products for the year 1!)01, and the values of forest 

 products exported from Canada in the 5 fiscal years 1904-8. 



Annual administration report of the Forest Department of the Madras 

 Presidency for the twelve months ending' the 30th of June, 1908 iAAlinin. 

 Rpt. Forest Dcpt. Madras, 1908, pp. 9(J + (' \ XVI + IS). — This is a progress 

 report relative to the constitution, management, and administration of the state 

 forests in the northern, central, and southern circles of the IMadras Presidency, 

 including financial statements for the year. The data relative to areas, progress 

 in forest surveys and working plans, routine administration work, forest prod- 

 ucts, revenues, expenditures, etc., are appended in tabular form. 



Impregnation of beech ties with copper arsenite, N. voN Lorenz {Cenibl. 

 Gesam. Forstic, 35 (1909), No. 8-9, pp. 388-390).— The author describes a 

 method of impregnating beech ties with an ammoniacal solution of copper arsen- 

 ite. The advantage claimed for the use of this material is that its preservative 

 constituent does not become washed out of the ties by rains as in the case of 

 copper sulphate, zinc chlorid, tar-oil, etc. 



DISEASES OF PLANTS. 



Annual report on plant diseases, M. Hollrung (Jahrcsber. Pflanzenkrank., 

 10 (1901). pp. X-f,//(?2).— This report, published in 1909, gives a review of the 

 literature which appeared in 1907 relating to plant diseases and insect pests, 

 about 1,400 titles being noted. 



While the total number of papers is less than in the previous volume (E. S. 

 R., 20, p. 758), a greater number of the articles are abstracted at some length. 

 The general arrangement and treatment of toi)ics are similar to those in pre- 

 vious reports. The author expressly desires investigators to send to him, at 

 the University of Halle, Germany, for review all papers published by them on 

 plant pathology, economic entomology, and kindred topics. 



The diseases of plants due to mineral substances in the soil, C. Roux 

 (Ann. 8oc. Bot. Lyon, 33 (1908), pp. l-'tl). — A critical review is given of litera- 

 ture X'elating to plant injuries attributed to the presence or absence of mineral 

 substances in the soil. The studies begin with the absorption of mineral salts 

 by plants, after which are described the poisonous action of different groups of 

 minerals and the injurious action of an excess of water, acids, organic mate- 

 rials, etc. in the soil. An attempt is made to classify these injuries according 

 to their causes. A bibliography of more than 200 works completes the paper. 



Beport of the plant pathologist, I. B. P. Evans (Transvaal Dept. Agr. Ann. 

 Rpt. 1908, pp. 120-134). — Notes are given on the principal diseases of economic 

 plants observed during the season covered by the report, together with sug- 

 gestions for their control as far as definite means are known. 



The results of some experiments to test the susceptibility of Indian wheats 

 to rust in the Transvaal are briefly given, the experiments having extended 

 over several years, and in all 13 varieties having been tested. All of these 

 varieties are claimed to be more or less rust resistant in India, but all were 

 affected with Puccinia graminis, and several of the varieties were literally 

 brown with the rust. In addition to the species P. graminis, P. triticina also 

 attacked the plants. 



