360 Forestry Quarterly. 



kilos (2,204.6 pounds). Extract of Quebracho $7.40 per 100 

 kilos. 



From an extract of a paper read by Dr. Allen F. Odell, Pro- 

 fessor of Chemistry, Louisiana State University, on A Chemical 

 Study of Cypress, it is learned that among the many products 

 obtained from various chemical and distillation processes, a com- 

 pound called cypressene has been isolated with the creosote oils. 

 It is this compound which gives cypress its great durability. The 

 chemist thinks that if this were used as a preservative, for in- 

 stance in Oak, the wood would have an indefinite life. 



The report on prices issued by the Forest Service shows slight 

 improvement for the first quarter of 191 1 for the western 

 market, while yellow pine advanced considerably over the pre- 

 ceding quarter, other species less so. In hardwoods only the 

 common woods show a tendency to increase, while the standard 

 woods remain unchanged or declined slightly. 



A patent has been granted on another cement cross tie. In the 

 cement a block of wood is so dovetailed that it can be easily re- 

 moved and replaced. This block rests on a cushion of cypress 

 shavings which is supposed to overcome the non-elasticity of the 

 concrete. 



Per cu. ft. 1st class 38 to 40c. 



2d " 33 



" 3d " 23 to 25c. 



From a report of U. S. Consul at Vladivostok, Siberia, it is 

 learned that in Eastern Siberia the Russian Government has been 

 cruising and surveying the Amur River system which comprises 

 about 400.000 square miles, available for logging. The stand 

 averages 45 trees per acre which mature in 100 years, thus ii5>- 

 200,000 trees could be cut annually without diminishing the 

 forest. There are no privately owned forests. Timber can be 

 taken out by water. British and German firms are asking for 

 square logs, planks and lumber. Prices export f. o. b. steamer 

 at Vladivostok for cedar lumber: 



