March, 1920] FORESTRT 79 



ages have been received. Many samples were sown in spring of 1917, with uniformly good 

 germination. Those from the northwest coast of U. 8. A. have shown considerable frost 

 injury while those from northern British Columbia and from Alaska survived the first winter 

 quite well. — The Bergen Experiment Station is conducting an extensive series of soil tests 

 for the purpose of discovering the causes of failure of plantations on soil with heavy raw 

 humus and on "lyng" ground. The 1918 station budget is given. — J. A. Larsen. 



542. Haslund, Ove. Taksation i firmaet Haaken Mathiesen's Skoge. [Forest taxation 

 on the holdings of Haaken Mathiesen.] Tidsskr. Skogbruk 26: 380-385. 1918. 



643. Hatjghton, S. Umbrella and baobab trees. Ceylon Antiquary and Lit. Reg. 4: 

 171. 1919. Brief, non-technical note on the baobab (Adansonia digitata) south of Mannar 

 Island, which, according to local tradition, was transplanted there by Arabs from the Red 

 Sea, probably attracted by the pearl fishery. No reference is made to Watt's Dictionary (1: 

 105), who attributes the introduction of the tree into India to Arab traders. — B. Laufer. 



544. Hawes, A. F. Economic aspects of the wood-fuel campaign. Jour. Forestry 17: 

 163-167. 1919. — The coal shortage and the winter of 1917-18 aroused much interest in the 

 use of wood for fuel in U. S. A. A campaign to encourage this use was inaugurated and per- 

 manent results are looked for in the establishment of municipal forests, the creation of wood- 

 markets on a cooperative basis, the establishment of standards of measurement and classifi- 

 cation for fuel wood, an increased use of fuel wood and a greater general interest in woodland 

 as a source of fuel. — E. N. Munns. 



545. Hees. Bombenwiirfe in Kiefernbestande. [Effect of bombs on pine stands.] 

 Deutsch. Forstzeitg. 34: 35. 1919. — Describes damage done by airplane bombs in pine for- 

 ests near Treves Trier). — W. N. Sparhawk. 



546. Hole, R. S. Notes from Dehra Dun Herbarium, No. IV. Cassia auriculata. In- 

 dian Forester 45: 64-65. 1919.— A silvical distribution of a shrubby tree, the bark of great 

 value for tanning. — E. N . Munns. 



547. Howe, C. D. A land of forests — without forestry. Canadian Forestry Jour. 14: 

 212-216. 1919. — Only 500,000 square miles of Canada is actually forest-producing, and half 

 of this has been burned. Investigations show that the white pine stands are practically gone 

 and that the tree is not being reproduced except on limited areas. In the spruce areas there 

 is a reduction of tw T o-thirds in the future growing stock, while in balsam stands the reduction 

 is mere than one-sixth. Patronage and the lack of proper management are responsible for 

 these conditions, which can be remedied by recuperative forestry practices. — E. N. Munns. 



548. Howe, C. D. Making of the spruce tree. Canadian Forestry Jour. 14: 186. April, 

 1919. — White spruce has seed crops at intervals of from three to seven years, a fact ascribed 

 to the use of large quantities of stored food, and to water conditions during the period between 

 seasons. In many cases heavy yields extend uniformly over large areas. — E. N. Munns. 



549. Htjbault, E. Une essence a grand rendement. [A species with large yield.] Rev. 

 Eaux et ForSts 67: 75-79. 1919. — Douglas fir (Psevdotsuga douglasii Carr.), because of the 

 properties of its wood, its rapid growth, and its large yield, is a North American species of 

 special interest for use in. France. First introduced into Scotland during the first half of the 

 last century it has proved successful there, in southwestern England, in Germany, and in 

 France. Artificial stands do best on soils that are light, deep, and fertile, and poorly on either 

 heavy clays or drj" sands. The species is generally regarded by English foresters as preferring 

 siliceous soils, although its aversion to calcareous soils has not been demonstrated. The 

 "Pacific green" variety has done well in Scotland and northern England with an annual pre- 

 cipitation of from 25 to 33 inches, while the "Colorado blue" variety does well in drier cli- 

 mates. The former, which, because of its more rapid growth, is the preferred variety, needs 



