348 EXPEBIMENT STATION EECOBD. 



The economic phases of forestry with special reference to the Prussian 

 state forests, Mabtin {Tharand. Forstl. Jahrb., 63 (1912), Noa. 1, pp. 40-5S; 2, 

 pp. 79-142; 5, pp. 199-2.51; 64 (1913), Nos. 1, pp. 1-26; 2, pp. 126-136; 5. pp. 213- 

 230; 65 (1914), Nos. 1, pp. 2-25; 2, pp. 91-112; S, pp. 211-263; 4, pp. 287-305; 

 66 (1915), No. 2, pp. 95-117). — A discussion of various forest problems with 

 special reference to the administration and management of the state forests in 

 Prussia. The subject matter is discussed under the general headings of yield 

 tables, economic principles, the index of the yield capacity of forests, the index 

 of the production of worth, instruction for the execution of the forest regulations 

 in the Prussian state forests, the determination of maturity and period of rota- 

 tion, and the organization of the forest service. 



Forest management in Java, past and present, A. E. J. Bbutnsma (Bosch- 

 bouwk. Tijdschr. Tectona, 8 (1915), No. 10, pp. 735-767). — A descriptive account 

 of the administration and management of the state forests of Java. 



Forestry industry, BL^kubankwai Kyokwai (In Japan and Her Exhibits 

 at the Panama-Pacific International Exhibition, 1915. Tokyo: Soci^t4 des Ex- 

 positions, 1915, pp. 119-127). — This comprises a statistical account of the for- 

 estry industry of Japan, prepared with special reference to its use at the Panama- 

 Pacific International Exposition in 1915. The information deals largely with 

 the distribution of ownership of forests, production of the forests, and the utili- 

 sation of various forest species. 



Forest products on farms (5. Census 0/ Canada, 5 (1915), pp. V-VII). — 

 Tabular returns secured in the Fifth Census of Canada are given, showing the 

 quantity and value of forest products cut on the farms in Canada for the year 

 1910. The total value of the forest products for all occupied farm lands was 

 $36,024,429. 



DISEASES OF PLANTS. 



A bibliography of recent literature concerning plant disease prevention, 

 C. C. Rees and W. Macfari.ane (Illinois Sta. Circ. 183 (1915), pp. 1-78).— The 

 authors, in compiling this bibliography, have made an attempt to Include refer- 

 ences to all the articles relatfng to plant disea.ses In which control mea.sures are 

 given, abstracts of which have appeared in the Experiment Station Ilecord 

 during the years 1909 to 1914, Inclusive, more than a thousand citations being 

 given. 



A bibliography of nonparasitic diseases of plants, C. W. Lantz (niinoit 

 Sta. Circ. 183 (1915), pp. 79-111). — In preparing this bibliography, the author 

 has attempted to present a list of nonparasitic diseases of plants with reference 

 to the more important literature on the.se diseases. The different diseases are 

 listed under the common names of the plants upon which they occur, the host 

 plants being alphabetically arranged. 



Report of the microbiologist. S. F. Ashhy {Ann. Rpt. Dept. Agr. Jamaica, 

 1915, pp. 29-31). — It is stated that the Panama disease of bananas persists in 

 some localities, appearing to be spread by human agency (on the feet, tools, 

 diseased plants, etc.). Bonnygate disease shows little tendency to spread 

 beyond areas subject to periodic flooding. Blackhead disease of the bulb and 

 roots has been found In most cases examined to be due to a nematode, said to 

 be identical with Tylcnchus bijormis. A brown rot of leafstalks Is ascribed 

 to a bacterium which gains entrance at injuries due to wind when abnormal 

 weather has weakened the plants. A heart rot, which was promoted by the 

 checking of growth during wet weather, is thought to be caused by the same 

 bacterium found in bud rot of coconut. 



Sporadic cases s\re noted of coconut bud rot, which Is thought to be favored by 

 the weakening influence of drought Destruction of the trees and replanting 



