PERIODICAL LITERATURE. 183 



poplar, basswood, alder, and elm. The following estimated percentages 

 of species are given : 



Percentage 



Caucasian beech 25.8 



Oak (3 species) 10 



Hornbeam 13.1 



Pine (6 species) 8.3 



Spruce 6.7 



Fir 6.1 



Other species 24 



The report gives the following interesting age, height, and volume 

 data: 



Age. Height. D.B.H. Volume, 



Species years feet feet cubic feet per acre 



Caucasian beech 200 140 7 8,000 



Oak 120 100 2 .5,000 



Pine 100 120 4 P.OOO 



Spruce 250 180 5 12 000 



Fir 250 170 7 16.000 



Spruce o feet at d.b.h. and fir with a 7-foot d.b.h. are interesting, 

 but one is inclined to be a bit skeptical of such diameters, even in 

 Russia, where almost anything might happen nowadays. The >;pecies 

 of conifers are given, as follows: Pines (Pinus sylvestris, monlana, 

 laricio. maritima, pinea, eldarica), Spruce (Picea orientalis) . Silver fir 

 (Abies nordmanniana) y and several species of Jimiperus. The spruce 

 is said to have proven very satisfactory in piano manufacture in Petro- 

 grad and Austria. J. D. G. 



The Caucasus — Its Resources a)id Trade. By Boris M. Baievsky. Russian 

 Division, Bureau of Foreign and Domestic Commerce, U. S. Dept. of Commerce. 

 Supplement to Commerce Reports. 



According to the Polish Consulate General in 



Timber London, the new Polish government is starting 



Resources of in on a campaign of interesting other Euro])can 



Poland nations, especially Great Britain, in its forest 



resources. Poland's financial condition is deemed 



so critical that she has decided to put her forest resources, which are 



said to be enormous, on the market. The first installment of the tim- 



berlands which Poland proposes to offer for exploitation is saifl to 



contain more than 15,000,000 cubic meters. The plan seems to have 



been adopted of exploitation by the Polish government itself, which 



