No. 2, March, 1921] FOREST BOTANY AND FORESTRY 113 



767. Cambage, R. H. Notes on the native flora of New South Wales. Part 10. The 

 Federal Capital Territory. Proc. Linnean Soc, New South Wales 43:673-711. PI. 71-74. 

 1918.— See Bot. Absts. 6, Entry 1515. 



768. Cardot, E. La reconstitution forestiere. [Forest reconstruction.] Rev. Eaux et 

 Forets 58: 121-123. 1920.— The eflforts of the Administration of Waters and Forests, fol- 

 lowing the Franco-Prussian war, to convert the stands of coppice in the national forests 

 into high forest yielded comparatively small results. This was primarily caused by an 

 exaggerated idea of the loss in annual revenue that would be necessitated by the conver- 

 sion, bj' the attempt to use a complicated system of management by natural regeneration 

 with regular thinnings and an even distribution of age classes, and by the many practical 

 difficulties encountered in putting this system into effect. A series of articles starting in 

 this issue of the Revue points out a simple, practical system of avoiding these difficulties and 

 of effecting the conversion with purely temporary and insignificant reductions in current rev- 

 enue. While the author apparently claims the system to be effective only in western France, 

 it would seem to be applicable, with slight modifications, to most, if not all, of the coppice 

 stands in the country. — S. T. Dana. 



769. Cheeseman, T. F. Contributions to a fuller knowledge of the flora of New Zealand: 

 no. 6. Trans, and Proc. New Zealand Inst. 51: 85-92. 1919.— See Bot. Absts. 6, Entry 1516. 



770. Cribbs, James E. Ecology of Tilia americana. I. Comparative studies of the foliar 

 transpiring power. Bot.Gaz. 68: 262-286. 13 fig. 1919.— See Bot. Absts. 6, Entry 1498. 



771. De Brun, H. Contre les incendies en Vaucluse. [Fire protection in Vaucluse.] Rev. 

 Eaux et Forets 58: 264-267. 1920.— The application of the forest fire laws of 1893, 1898, and 

 1902 should be extended to include the department of Vaucluse. Every effort should be 

 made to prevent fires from starting by prohibiting smoking in the forest and by delaying the 

 opening of the hunting season; and to control them after they have started by organizing 

 permanent fire-fighting crews composed of local volunteers. These crews should be specially 

 trained for their work and should be paid by the communities concerned, which should, 

 however, be assisted by subsidies from the state and the department. — S. T. Dana. 



772. De la Hamelinaye, H. Rapport du diametre a 1™ 30 au diametre de la souche. 

 [Relation between breast high and stump diameters.] Rev. Eaux et Forets 58: 133-135. 

 1920. — Measurements of a large number of stumps of oak and beech in the forests of Gers- 

 Hautes, and Basses-Pyrenees showed that the sum of the largest and smallest stump diame- 

 ters, measured at the surface of the ground, was approximately equal to the sum of the cir- 

 cumferences of the same trees measured at breast height (1.30 m.). In other words, the aver- 

 age diameter at breast height in the case of these two species was equal to 63 per cent of the 

 mean diameter of the stump at the surface of the ground. — S. T. Dana. 



773. Demorlaine, J. La sylviculture et les chars d'assaut. [Silviculture and tanks.] 

 Rev. Eaux et Forets 58: 235-236. 1920. — During the war the forest of Compiegne was used 

 as a practice field for tanks, the caterpillars of which broke up the ground so as to form an 

 excellent seed bed. As a result the heavy beech-nut crop of 1918 was followed by the estab- 

 lishment of a remarkably dense stand of seedlings. This suggests the possibility of using 

 tanks regularly in beech and oak forests during good seed years in order to stir up the soil 

 and thus favor natural reproduction, at the same time giving the tanks an opportunity to 

 practice their maneuvers under difficult conditions. Similarly, caterpillar tractors might be 

 used to advantage from a silvicultural point of view for the hauling of logs in lumbering 

 operations. — aS. T. Dana. 



774. Detwiler, Samuel B. White pine blister rust control in 1919. Amer. Plant Pest 

 Committee Bull. 4: 1-10. 1920.— See Bot. Absts. 7, Entry 1224. 



