NOTES 325 



interest. This phenomenon might not. of course, occur in cases of 

 other species, such as spruce and fir, which are in greater demand for 

 Christmas trees. C. R. T. 



Wood That Doks Not Rot 



The Timber Trades Journal, January 29, 1021, page 299, says that 

 the wood of the mangrove tree, which is found in French Guiana, is 

 considered by the French as a wood that will not rot. All exposure 

 and efforts to break down its fiber in four years' experiments by the 

 French Railway Sei-vice have been useless. 



The grain of the wood is so close as to practically exclude all mois- 

 ture. Its density is placed at 110, as against 40 for fir, and 70 for oak. 

 In addition to this closeness of fiber, the mangrove has a large amount 

 of tannin in its composition. This protects it from insects and such 

 blights as mould and damp. While not as brittle as oak, it has twice 

 the resistance to flexion, and has about the same potency against crush- 

 ing and twisting. 



A Forest Experiment Station for Pennsylvania 



The establishment and maintenance of a forest experiment station in 

 Pennsylvania is provided in a bill (H. R. 15950) introduced in the 

 House of Representatives on January 31 by Mr. A. H. Walters. The 

 bill provides $40^)00 for this purpose, to be available until June 30, 

 1922. The money will be expended under the direction of the Secretary 

 of Agriculture, and the location of the station is left to his judgment. 

 Provision is made for co-operation with the State of Pennsylvania 

 and with any other agencies which may be interested to determine and 

 demonstrate the best methods for the management of forest lands and 

 farm woodlands in the Alleghany region. 



Dr. C. A. Schenck, late Director of the Biltmore Forest School, and 

 now in charge of the children's relief work at Darmstadt, writes that 

 he would like to sell his library as a means of raising money for the 

 underfed children in his old town, the city of Darmstadt. Plis library 

 contains a complete set of American Lumberman, probably from 1895 

 to 1912, all bound. He has also many old-time American publications 

 which are now hard to obtain, such as Sargent's Tenth Census Report, 

 and others. He would like to dispose of all these to some American 

 forester who might have use for them. His address is : Dr. C. A. 

 Schenck, Lindenfels I. O., Darmstadt, Germany. 



