74 FORESTRY [Bot. Absts., Vol. VI, 



529. Bailey, W. A. Season of growth of sal, Shorea robusta. Indian Forester 46: 317. 

 1920. — Measurement of sal sample plots showed a growth of but 0.2 inch in circumference in 

 the June-to- January period, while a normal increment for a full year is 1.0 inch. It may be 

 that maximum growth takes place before the monsoon. [See also next preceding Entry, 528.] 

 — E. N. Munns. 



530. Baltz. Die Weymouthskiefer (Pinus strobus.) [The Weymouth pine.] Forstwiss. 

 Centralbl. 41: 302-307. 1919.— Suggests caution in planting white pine on a large scale in 

 Germany, because it is susceptible to blister rust (Peridermium strobi), it has a decided ten- 

 dency to develop many branches which hang on even after they die, and so yields inferior 

 lumber; and it is attacked by the pine bark-louse (Chermes strobi), which retards growth 

 and even kills the trees or so weakens them that they are attacked by the fungus Agaricus 

 mellsus. Neither does this tree, as has been supposed by some, thrive on all kinds of sites, 

 but requires a fair amount of moisture and prefers good soil, upon which native species will 

 generally yield better returns. Some of the failures of white pine plantations are due to 

 carelessness in selecting the sites. The wood is not of particularly high quality; even attempts 

 of the Diamond Match Company in Germany to use it for match manufacture failed, because 

 it did not split well and was too brittle. Planting in pure stands is not recommended, but 

 on account of its good silvical qualities it is a good species to plant in mixed stands with 

 spruce, beech, and Scotch pine, especially to fill openings which may develop in such stands 

 after they are established. The name "silk fir" (Seidenfohre) has been used in Baden and 

 the Palatinate to avoid the English "Weymouth pine." "White pine" conflicts with Pinus 

 silvestris, called white pine in Austria to distinguish it from the black pine. Baltz suggests 

 "Strobe."— IF. N. Sparhawk. 



531. Bandekow. Die Anwendung der Photogrammetrie in der Forsteinrichtung. [Use 

 of photographic surveying in forest management.] Deutsch. Forstzeitg. 35: 60-61. 1920. — 

 Suggests that aerial photography will be very useful in mapping forest areas. — W. N. Spar- 

 hawk. 



532. Beevor, Sir Hugh R. Young woods in Belgium. Quart. Jour. Forest. 13 : 272-275. 

 1919. — This is a brief discussion of the methods followed and the species used in recent forest 

 planting operations in Belgium. — C. R. Tillotson. 



533. Brown, William H., and Elmer D. Merrill. Philippine palms and palm products. 

 Forestry Bur. Philippine Islands Bull. IS. 129 p., 44 pi- 1919. — A general consideration of 

 the economic uses of all known Philippine palms, comprising 123 species in 24 genera. Keys 

 are given to the genera and species and brief descriptive notes, all local names, distribution, 

 and occurrence are noted for each species. The group is one of very great economic impor- 

 tance, yielding a multitude of materials entering the internal and external commerce of the 

 Philippines.— #. D. Merrill. 



534. Bruce, Donald. The height and diameter basis for volume tables. Jour. Forestry 

 18: 549-557. 1920. — Volume tables are based upon diameter and height, the measurement of 

 the former "breast high" being generally accepted. While more variable than diameters 

 taken at some other heights, it is precise enough for forest practice. In height measurements, 

 there is little conformity. Total height is correct for sample plot work and cubic foot volume 

 tables. For general practice, total height is not always possible and there is a wide diver- 

 gence between the fixed top diameter and the merchantable height. In the latter case, the 

 divergence varies with the intensity of the utilization and the practice of the region. With 

 tables prepared to a fixed top, a corrective factor may be applied in accordance with the 

 practice of the logger and region. The use of form factors only serves to complicate the 

 matter. — E. N. Munns. 



535. Bruce, Donald. A proposed standardization of the checking of volume tables. 

 Jour. Forestry 18 : 544-548. 1 fig. 1920. — Volume tables need better and more uniform check- 



