No. 1, July, 1920] FORESTRY 05 



431. Gebdlht, W. B. The forest code and the regime forestier. Amer. Forestry 25: 

 1451-1457. 6 fig. 1919. — The writer considers the historical developmenl of the "regime 

 forestier," defined as the sum totiil of laws and administrative decrees applicable to forests 

 under all forms of public ownership, and which is applied today to abouj one-third the total 

 forested area of France. Typical forestry practice under these laws is described in some 

 detail. — Chas. II. Otis. 



432. Greeley, W. B. The forest policy of France — its vindication. Amer. Forest. 25: 

 1379-1385, 1424. 8 fig. 1919. — A picture of French forestry in the broad,— its hist orical setting, 

 the national conceptions which it expresses and what it has accomplished. — Cha . II . Otis. 



433. Grondal, B. L. The seasoning of lumber. Sci. Amer. Supplem. 87: 158-160. 1919. 

 [From the West Coast Lumberman.] 



434. Hertz. Staatsaufsicht fur den Privatwald [Governmental supervision of private 

 forests.] Zeitsch. Forst- u. Jagdwirtsch. 51: 177-183. 1919. — A plea for the extension and 

 retention of private forests in Germany, but that same be placed under government super- 

 vision. Writer claims that state owned forests are less well managed than private tracts. 

 Private ownership tends to stimulate greater diversification in methods and kinds of timber 

 grown. Hence the most intensive use of the various forest sites is accomplished. This is 

 not generally the case with state owned forests. Private ownership also promotes personal 

 thrift and thus is an asset that proves to be of utmost value in times of financial stress. After 

 elaborating on the advantages of private owned forests the writer outlines a plan of govern- 

 mental control which he believes will result in good management yet not interfere materially 

 with the desires of the owner. — Hermann Krauch. 



435. Hollick, A. The story of the Bartram oak. Sci. Amer. 121: 422, 429-430, 432. 6 

 fig. 1919— See Bot. Absts. 4, Entry 615. 



436. Illick, J. S. Use the dead and dying chestnut. Sci. Amer. Supplem. 88: 252-253 

 7 fig. 1919. — Considers the importance of immediately salvaging, into various building 

 materials and forest products, of trees killed by fungus growth. — Chas. H. Otis. 



437. Illick, J. S. When trees grow. Amer. Forestry 25: 1386-1390. fig., 2 tables. 

 1919. — Based on data obtained in the vicinity of Mont Alto, Pa., the writer states that most 

 of the native and introduced forest trees make 90 per cent of their height growth in less than 

 40 days. Growth begins slowly, after a variable period rises rapidly, then reaches a maxi- 

 mum which is maintained for a short time, finally falls gradually to a minimum and then 

 ceases completely. Actual growth, however, progresses by leaps and bounds, alternating 

 with rest periods, which may be of long or short duration. It is believed that the recurring 

 rest periods may become a rather fixed and regular feature of the growth of certain species, 

 as is noted for pitch pine. The rate of tree growth not only fluctuates throughout the grow- 

 ing season, but also during each day. About twenty trees of each of four species showed that 

 the rate of growth at night was about twice that during the day. — Chas. H. Otis. 



43S. Jentsch, F. Wald und Waldwirtschaft in Belgien. [The forests and forest man- 

 agement in Belgium.] Tharandter Forst. Jahrb. 70: 111-130. 1919. — A rather detailed de- 

 scription of Belgium forests by a German forester who was in that country during the period 

 of occupation. Belgium was originally heavily forested from the river Scheldt to the Ardennes 

 mountains. The extent became gradually diminished through settlement. Deforestation 

 was, however, carried too far, with the result that a great deal of desert land exists to-day, 

 considering such a thickly settled country as Belgium. The fertile portions of north-western 

 Belgium are almost devoid of forests and near the manufacturing centers a poor stand exists. 

 The hilly, south-east portion of the country is, however, quite heavily forested. Altogether, 

 Belgium has about IS per cent of forested land. Greatest percentage is in Namur (31 per cent) 

 and in Luxemburg (41 per cent). Detailed descriptions of the geological formations and cor- 



BOTANICAL ABSTRACTS, VOL. IV, NO. 1 



