No. 1, August, 1920] FORESTRY 31 



tions. The author cites evidence to show thai natural afforestation of the high countt 

 feasible but suggests that on the more accessible waste areas it be augmented by artificial 

 afforestation as now practiced. [See also next preceding Entry, 219.] — C. F. Km 



221. Nordstedt, C. T. O. [Swedish rev. of: Hbkibeet-Nimson, N. Experimented 

 Studien uber Variabilitat, Spaltung, Artbildung und Evolution in der Gattung Salix. [Experi- 

 mental studies on variability, segregation, speciation and evolution in the genus Salix. ] Lunda 

 Universitets Arsskr. N. F. (Avd. 2.) 14'- >s : 1-145. 65 fig. 1918.] Bot. Notiser 1919: 31 

 1919. 



222. Pearson, R. S. Note on the mechanical strength and seasoning properties of Shorea 

 robusta timber. Indian For. Rec. 7: 120-145. 1919.— The results of tests on sal for trans- 

 verse strain, compression, shearing and hardness are given in detail on timber felled at differ- 

 ent times of the year, from different localities, and from trees of different origin. Data is 

 also presented on the rate of seasoning of woods obtained under the same conditions as those 

 described above. — E. N. Munns. 



223. Pf.tch, T. The effect of time intervals in rubber tapping. Dept. Agric. Ceylon 

 Bull. 42. 8 p. 1919. 



224. Pierre, L. Note sur l'lsonandra Krantziana (arbre a Gutta-Percha de la Cochin- 

 chine et du Cambodge). [Note on Isonandra Krantziana, a gutta percha tree of Cochinchinaand 

 Cambodia.] Bull. Agric. Inst. Sci. Saigon 2: 33-40. 1920. — A report on the economic possi- 

 bilities of the above species, this one probably being the form described by Pierre as Dichopsis 

 Krantziana. — E. D. Merrill. 



225. Raux, Marcel. Une devise de politique forestiere. [A motto of forest policy.] 

 Rev. Eaux et Forets 57: 248-254. 261-274. 1919.— A comprehensive forest policy should in- 

 clude both a far-sighted administrative program and legislation necessary to make this pro- 

 gram effective. The essence of such a policy can be expressed by the simple motto, "To 

 create and to conserve." The State should take the lead in creating, not by the purchase of 

 private lands already forested, but by the acquisition and reforestation, chiefly with native 

 conifers, of lands now uncultivated or abandoned. These plantations, scattered throughout 

 the country, would not only prove profitable financially, but would prove more effective in 

 stimulating similar work on the part of other owners than any amount of literary propaganda. 

 Reforestation by communities should be further encouraged by State loans, and the resulting 

 plantations should be subject to the forest regime. Private owners and forestry societies 

 should be given free advice and other assistance by the State, and plantations established by 

 them should be granted liberal exemptions from taxation until they reach a certain height. — 

 The conservation of privately owned forests, which constitute more than two-thirds of the 

 forest area of France, is a matter of very real public concern and should therefore be under- 

 taken by the State. Supervision of cuttings in such forests should be exercised by the State, 

 without charge to the owner; while clear cuttings in protection forests should be prohibited, 

 and in other forests should be followed by reforestation. As to clearings, legislation should be 

 enacted providing that the forest area of France must not be diminished ; prohibiting the clear- 

 ing of all stands in the zone of protection forests; and requiring a permit from the Minister 

 of Agriculture for the clearing of all stands outside of this zone. These measures would re- 

 quire an increased forest personnel, which could be secured in part by relieving forest officers 

 of their duties as fish wardens. Supervision of private cuttings should also be facilitated by 

 commissioning private forest guards as forest officers. Finally, conservation should be pro- 

 moted by giving forest owners, both public and private, more adequate protection against 

 trespass by increased penalties. — S. T. Dana. 



226. Reynard, J. Les arbres de la paix. [Trees of peace.] Bull. Trimest. Soc. Forest 

 Franche-Comte et Belfort 13 : 111-112. 1919.— Trees should be widely planted as the simplest 

 and most practical means of commemorating the peace treaty of Versailles. Better than 

 anything else they serve to bind father to son, dead to living, generation to generation. — 

 S. T. Dana. 



