672 EXPERIMENT STATION RECORD. 



FORESTRY. 



The planting 1 and care of shade trees, II. S. Reed (Missouri Sin. Circ. of Infor- 

 mation 17, pp. 16, figs. 7). — Thin publication, which is reprinted from the Annual 

 Report of the Missouri State Horticultural Society for 1903, is designed to give infor- 

 mation on the proper method of planting and caring for shade trees on streets and 

 lawns. Suggestions are given as to the choice of species for planting in different situ- 

 ations, and directions for planting and subsequent care of trees. Particular atten- 

 tion is given to the subject of pruning, and specific directions are given for the 

 pruning of different species of street trees. 



The forester's dictionary (Des holzhandlersforstlich.es Worterbuch. Bunzlau: L. 

 Fernbach, 1903, pp. 95, Jigs. 37). — This is an encyclopedic dictionary for the use of 

 lumbermen, foresters, and others interested in allied industries. 



The role of light in forests, A. Cieslae (Mitt. Forstl. Versuchsw. Oesterr., 1904, No. 

 30, pj). 10,5, Jigs. 4)- — In order to show the significance of thinning in forestry ami its 

 relation to light, the author gives the results of a prolonged series of observations on 

 the role of light in forest growth. In a preliminary chapter the growth of 3 to 7-year- 

 old seedlings of white pine, larch, fir, and hemlock, both with a leaf litter and within 

 a dense mat of grass, is shown. 



After describing in detail the various forest plats which were under observation 

 for 10 or more years, the author discusses the effect of the intensity of light on the 

 stand, as well as upon the mass production of the forest. The plant associations 

 as influenced by light are described in detail, after which the observations so far as 

 they have an application to the reproduction and growth of forests are summarized. 



The influence of forests on water level in mountainous regions, Ototzky 

 (Ann. Set. Agron., 2. ser., 1904, II, No. 1, pp. 48-62). — This is a controversial article, 

 in which the author gives the results of his observations as well as a review of liter- 

 ature relating to the influence of forests on the water level in mountainous regions. 



It is usually claimed that ground water is influenced by any factor that checks the 

 run-off, and on this account it is often held that forests, by holding back flood 

 waters, cause a rise in the water level. While this may be true in plains or fairly 

 level regions, the author believes that in mountainous regions forests have under 

 these conditions but little influence on underground waters. In general it is claimed 

 that throughout the year the average water level is lower within the forest than in 

 the open field. The author concludes that the influence of forests in mountainous 

 regions on subterranean water is still an open question. 



Operations of the forest reserves (Tradesman, 62 (1904), No. 5, pp. 72,73). — 

 An account is given of the attempts made by the Government in controlling and pro- 

 tecting the forest reserves of the country, which now include 57,833,974 acres, exclu- 

 sive of the reserves in Alaska. These reserves are distributed among 13 States and 

 Territories, and as means for the conservation of water they are believed to be of 

 great service. The work of the Bureau of Forestry of this Department in investi- 

 gating these reserves is briefly outlined. 



Canadian forests and forestry, A. H. Unwin (Jour. Soc. Arts, 52 (1904), No. 

 2697, pp. 721-725). — A description is given of the forests of Canada, which are said 

 to extend from Labrador to the mouth of the Mackenzie River, and also of the 

 forest areas of British Columbia and western Alberta. Of the trees growing in this 

 region the most valuable are said to be the white pine, white spruce, and Douglas 

 fir. The distribution of these and other valuable species of trees is indicated, and 

 notes given on the hard-wood or deciduous trees. 



Notes are given on the various regulations which have been adopted from time to 

 time regarding the cutting of timber, and suggestions offered for maintaining the 

 crop at a maximum production. The suggestions offered include adequate protection 



