Il8 forestry Quarterly. 



were introduced, increasing the cost considerably, the tieing on 

 wood in Saxony costing $3,200 per mile, the metaling in Baden 

 about $5,800. Such cost would necessitate a duration from 50 

 to 60 years, considering also the increased cost of the better sub- 

 structure of track necessary. This, in the face of treated beech 

 ties lasting 30 years (in France), would speak against the metal 

 tie. But there are other advantages from metal track which 

 the author does not bring into his calculation. 



Hk)lzschwelle oder Eisenschwelle. Schweizerische Zeitschrift fiir Forst- 

 wesen, August, 191 3, pp. 254-56. 



Owing to the decreasing shortage of 

 Mangrove taiibark in Europe and in America, the 



for note prepared by Mr. Pearson of the In- 



Tanbark. dian Forest Research Institute at Dehra 



Dun, is of special interest. According to 

 his investigations, in the Tan Extract Factory at Rangoon it 

 was clearly demonstrated that Mangrove bark yielded extracts 

 of good quality which were saleable in Europe. The largest 

 forests of this species are found down the coast of Arakan, ex- 

 tending along the Bassein coast towards Rangoon, and again 

 along the coast of Mergui and Tavoy in south Tenasserim. 



T. S. W., Jr. 

 Indian Forester, November, 1913, pp. 545-548. 



STATISTICS AND HISTORY. 



The recently published Bavarian official 



Bavarian forest statistics for the management years 



Statistics. 1910 and 191 1 are reviewed by Stam- 



minger. They show out of a total area 



of 6,472,000 acres a total timber growing area in state forests 



of 2,016,831.5 acres in 1910 with a net yield of $3.87 per acre; 



and 2,018,402.5 acres in 191 1 with a net yield of $4.12 per acre. 



This is in sharp contrast with the net yield of $1.76 per acre in 



1868 and $3.61 in 1898! The volume of business is shown by 



the following statement: 



