242 EXPERIMENT STATION RECORD. 



Yard and garden, T. li.vKKi! { India imixilia, I ml., [IDOS], pp. J/IS, pi. 1, figs, 

 l^li). — This iHtpular work is offered as a book of praetical information for the 

 amateur gardener in city, town, or suburb. Consideration is given to the 

 planning and treatment of the home grounds, the use and culture of vines, an- 

 nuals, perennials, bulbous and tuberous rooted plants, shrubs, and trees, varie- 

 ties recommended for different purposes, seasons, and methods of treatment, 

 soil and fertilizers, insects and diseases, and the indoor winter window garden. 

 An appendix contains planting tables of bulbous plants and annuals for various 

 purposes, together with diagrams illustrating different forms of planting. 



FORESTRY. 



Report of board of directors of the American Forestry Association for the 

 year 1907 iForcstry and Irriy., 1.'^ (I'JUS), Ao. 3, pp. lo-J-162, figs. 2). — This 

 report, presented at the last annual meeting of the association, contains a sum- 

 mary of the work of the association for the year, together with an outline of 

 the forest situation and of forestry work in the various States. The advance- 

 ment in educational work in forestry at different universities and schools is 

 also reviewed, together with instances of increased interest in tree planting and 

 forest conservation on the part of cities, business concerns, and individuals. 



Report of the forestry branch for the period July 1, 1906, to June 30, 

 1907, R. Dalrymple-Hay (Rpt. Forestry Branch A". 8. Wales, 1907, pp. 25, i)ls, 

 6). — This report deals with various forestry operations for the year ending June 

 30, 1907, including alterations in areas, administrative and sylvicultural work, 

 revenues, exi)enditures, imports and exports of timber, inspection of timber for 

 export, and general notes on the timber industry. 



In a series of appendixes several subjects dealing with forestry in New South 

 Wales are discussed, including forest conservation, the forest survey, a de- 

 scription of state forestry as existing at present, timber supplies of New South 

 Wales and their relation to public works, timber legislation, and the annual 

 report of the government botanist on forestry work for the year. Illustrations 

 are also given of several species of eucalypts. 



The causes of timber lines on mountains, C. H. Shaw (Abs. in Science, n. 

 ser., 27 (1908), Xo. 687, pp. 339, 3)0). — The author describes observations on 

 the timber lines of the White Mountains, Adirondacks, and Selkirk Mountains. 

 In the last-named case it is held that snow, acting as a mechanical agency, 

 plays an important part, either by the direct breaking of the trees under the 

 weight of the snow, or by rendering the small trees and lower branches par- 

 ticularly liable to fungus attacks on account of the late-lying, wet beds of snow. 



The author states that when the timber line is restricted by winds, the trees 

 are limited in height and grow thickly in level-topped associations. The upper 

 outposts of the forest are in local depressions or sheltered spots. On the other 

 hand, when the struggle of the trees for existence is with the snow, the forest 

 as altitude increases is resolved into groups of trees. These become more sepa- 

 rated and the upper groups occupy ridges and local ele\ations. The trees in- 

 jured by the snow possess the spire form, with flourishing upper shoots, but the 

 lower branches and foliage are dying or dead, broken by snow, and attacked by 

 fungi. 



Cutting timber on the National Forests and providing for a future supply, 

 R. ZoN (f/. »S. Dept. Ayr. Yearbook 1907, pp. 277-288, pis. 3).— The author dis- 

 cusses the Government policy of dealing with the timber land on the public 

 domain during three periods as follows: (1) Prior to the act of Congress of 

 June 4, 1S97, which gave the Secretary of the Interior authority to sell timber 



