DISEASES OP PLANTS. 445 



1910, and 943,141 cords were exported iu the raw state. Pulpwood was imported 

 to Canadti for the first time. 



Forest products of Canada, 1910. — Tig-ht and slack cooperage, H. R. Mac- 

 MiLLAN, B. Robertson, and G. Boyce {Dcpt. Int. Canada, Forestry Branch Bui. 

 27, 1911, pp. 11). — A statistical review for 1910 showing the production of 

 cooperage stock in Canada by classes, quantity, value, and species. 



DISEASES OF PLANTS. 



The present organization of the service in different countries for the 

 protection against plant diseases and injurious insects, J, M. Saulniee 

 {^Organisation AetvcUe dii Service de Protection Contre les Maladies des 

 Plantes et les Insectes Nuisibles dans les Divers Pays. Rome: Interriat. Inst. 

 Agr., 1911, pp. XVI+223). — This consists of a compilation of the regulations 

 in Germany, Belgium, Bulgaria, Chile, Denmarli, Spain, France, Ttinis, Great 

 Britain and Ireland, Australia, Canada, India, Mauritius, Italy, Luxemburg, 

 Mexico, Holland, Roumania. Russia, Sweden, Switzerland, and Uruguay. The 

 institutions and establishments concerned iu the study of plant diseases, in- 

 jurious insects, and means for their control are described, together with the 

 Ijersounel of the different services, the methods by which their investigations 

 are brought to the attention of the public, the financial budgets of the different 

 institutions, and the legislative and' administrative measures which have been 

 put into effect in the different countries regarding plant diseases and in- 

 jurious insects. 



California plant diseases, R. E. Smith and Elizabeth H. Smith (Cali- 

 fornia 8ta. Bui. 218, pp. 1039-1193, figs. 102).— This publication is intended 

 as a handbook of plant diseases occurring in California, giving a brief desci"ip- 

 tion of the nature of the principal troubles, together with directions for their 

 control. Many miscellaneous and less important troubles are also described, 

 the plan being to record all the plant diseases of any possible interest which 

 have been observed in California by members of the department. 



The authors give brief outlines of plant physiology, of beneficial or un- 

 favorable soil, air, and climatic conditions, and of the general causes of dis- 

 ease. Brief directions are given for the examination of plants for indications 

 of disease, and lists of physiological and si>ecific plant diseases in California. 

 Directions are given also for plant management and treatment, including 

 formulas for the more common fungicides and directions for their use. A 

 brief bibliography is appended. 



Fungus diseases, J. R. Bovell (Rpt. Local Dept. Agr. Barbados, 1910-11, 

 pp. IfS, 46). — Brief accounts are given of some fungus diseases of sugar cane, 

 cotton, mangoes, etc. 



The root disease of sugar cane (Marasmius sacchari) is said to be the most 

 prevalent and destructive of the diseases which have come to the notice of the 

 author. The stem disease {CoUetotrichum falcatum) is said to be particularly 

 destructive to the Bourbon varieties of cane, on account of which their cul- 

 ture has had to be abandoned. The rind disease [Trichosphwria sacchari) the 

 author believes is of relatively little importance, as the fungus is thought to be 

 only a saprophyte. The presence of the leaf sheath disease {Cercospora 

 vagincE) and the eye spot disease (Leptosphceria sacchari) is briefly mentioned. 



Of the cotton diseases, the mildew, round spot, anthracnose, and angular leaf 

 spot are briefly described. 



Plant diseases due to fungi, W. E. Collinge (Rpt. Econ. Biol., 2 {1912), 

 pp. Jfl-49). — Brief descriptions are given of a number of diseases that have 

 been under observation, together with suggestions for their prevention, Among 



