846 JOURNAL OF FORESTRY 



pure or in mixture with alpine fir (Abies subalpine, he calls it) are 

 considered in some detail. The system of management is far from 

 intense as compared with German methods, only tie timber is logged, 

 and regeneration is secured naturally, since lodgepole is a very prolific 

 seeder. A few attempts have been made by the Forest Service to 

 reforest burnt-over areas artificially, where neither lodgepole nor 

 aspen have come in. Aspen and lodgepole usually occupy the land 

 after a fire; the latter most frequently following Douglas fir. The 

 seed extraction establishment on the Arapaho Forest is described. The 

 dendroctonus bark-beetles cause very much damage in this region. 

 Their activities, according to Hopkins, are of a primary nature; not 

 secondary, as the author considers the activities of German bark 

 beetles. Although no direct evidences of insect damage were en- 

 countered, the writer was struck with the damage caused by the 

 porcupine (Brethison dorsatum) in lodgepole forests, and gives a 

 description of this animal. J. RoFSFR. 



von Tubeuf, C. Schilderungcn und Bilder aus nord-amerikanischen Waldern. 

 Naturw. Zeitschr. Forst- und Landw., 17 :153-166. PI. 54-59. 1919. 



With Scotch pine grown in an 80-year and 



Pine and Beech beech in a 190-year rotation, the pine is nearly 



Forests in five times as advantageous as the beech from a 



Normandy purely financial point of view. This is partly 



accounted for by the fact that this rotation for 



beech is not its financial rotation while 80 years is perhaps the financial 



rotation for pine. From the silvicultural point of view, the advantage 



is certainly with the beech, which as a pure crop has many advantages 



which can not be assigned to extensive areas of pure pine. 



C. R. T. 

 Hopkinson, A. D. A note on the financial results of pine and beech forests 

 in Normandy. Trans. Roy. Scot. Arbor. Soc, 34 :82-87. 1920. 



A general consideration of the economic uses 

 Philippine Palms of all known Philippine palms, comprising 123 

 and Palm species in 24 genera. Keys are given to the 



Products 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 im- 

 portance, yielding a multitude of materials entering the internal and 

 external commerce of the Philippines. E. D. Merrill. 



Brown, William H., and Merrill, Elmer D., Philippine palms and palm pro- 

 ducts. Forestry Bur. Philippine Islands Bull. 18. 1919. 



