340 EXPERIMENT STATION RECORD. 



for close piled boards, tliey are not so severely attacked by insects, and are 

 more effectively pi-otected against sap stain. Sap stain solutions can be applied 

 to the boards more readily and cheaply by machinery than by hand. Hand 

 treatment with sodium bicarbonate solution costs from 21 to 24 cts. and machine 

 treatment from 7 to 10 cts. per 1,000 ft. b. m. Shavings from soda-dipped 

 boards were slightly less inflammable than those from untreated boards. 



The comparative strength of untreated and chemically treated woods and of 

 those stained and unstained is briefly discussed in the light of recent tests. At 

 the same moisture content sap stained boards were slightly, but not materially, 

 wealver than those free from stain. Likewise, soda-dipped lumber is just a 

 trifle stronger, stifi'er, tougher, and has a greater surface hardness than natural 

 lumber. 



Review of forest administration in British India for the year 1909- 

 10, F. B. Bryant {Rev. Forest Admin. Brit. India, 1909-10, pp. 77+^/9). — 

 This is the customary report for the year 1909-10 relative to forest operations 

 in the different Provinces of British India. The data given and discussed deal 

 with alteration in area, forest settlements, demarcation, and surveys, the devel- 

 opment of working plans, roads, bridges, and miscellaneous work, forest pro- 

 tection, silviculture, exploitation, yields, revenues, and exports, including 

 financial results for the year. 



There wei'e added to the area under the control of the forest department 

 during the year 3,777 sq. miles, making a total of 245,551 sq. miles, or 24.9 per 

 cent of the total area of British India. 



Report of the forestry department of Sweden, 1910 (Skoffsvdrdsfdr. Tidskr., 

 1911, Allmanna Delen, No. 9-10, pp. 3S2, pi. 1). — A report on the administra- 

 tion and work of the forest service in the different counties of Sweden during 

 the year. Statistical tables for the whole country are appended. 



The National Forest manual. — Timber sales, administrative use, timber 

 settlement, free use (U. 8. Dcpt. Agr., Forest Serv., 1911, pp. .90).— This com- 

 prises regulations of the Secretary of Agriculture and instructions to forest 

 officers relating to and governing timber sales, administrative use, timber settle- 

 ment, and the free use of timber and stone upon National Forest lands, issued 

 to take effect December 1, 1911. 



The National Forest manual. — Claims, settlement, administrative sites 

 (f7. 8. Dept. Agr., Forest Serv., 1912, pp. 56, figs. ^). — This comprises regula- 

 tions of the Seci'etary of Agriculture and instructions to forest officers relating 

 to claims, settlement, and administrative sites of National Forest lands, issued 

 to take effect February 1, 1912. 



DISEASES OF PLANTS. 



Cultures of Uredineae in 1910, J. C. Arthur (Mijcologia, If (1912), No. 1, pp. 

 7-33). — A report is given of culture experiments carried on under the author's 

 direction to determine the alternate hosts of a number of heteroecious rusts. 

 Some 34 species that have been previously reported by the author or other 

 investigators are listed, together with 6 which are now reported for the first 

 time. These species are as follows: Puccinia crandallii — teleutospores from 

 Festuca confinis grown on Symplwricarpos racemosus; P. quadi'ijwrula — teleu- 

 tospores from Carcx goodenovii grown on Aster paniculatus ; P. Jithospermi — 

 teleutospores from Evolvuhis pilosus grown on the same host; JJromyces acu- 

 minatus — teleutospores from Spartina michauxiana grown on Polemonium rep- 

 tans; Coleosporium vernoniw — secidiospores from Pinus twda grown on Vernonia 

 crinita; and Melampsora albertensis — teleutospores from Populus tremuloides 

 grown on Pscudotsuga mucronata. 



