28o Forestry Quarterly. 



cause these are always conditions of ownership and utilization 

 which make a mere determination by volume based on increment 

 inexpedient. For all these reasons area as well as volume must 

 continue to play an important role in yield determination, espe- 

 cially in all intermediate yields. 



The reviewer concludes that the proposal to abandon all area 

 control is rather previous and would increase the cost of control 

 and administration without any corresponding advantages over 

 present methods. He, however, commends Baader's dissertation 

 as clai*ifying the subject of increment determination and as stimu- 

 lating more exact work along these lines. 



A. B. R. 



Die Veranschlagung des Zuivachses hci Waldertragsregelungen. Allge- 

 meine Forst- und Jagd- Zeitung, March, 1914, pp. 100-102. 



A unique and extensive detailed report 

 Evaluating is furnished by Oberforstrat Reus on the 



Damage damage occasioned by the drought of 191 1 



/row over the entire forest property of the Duke- 



Drought. dom of Anhalt, comprising around 75,000 



acres in very varied condition. In the year 

 191 1, precipitation was deficient by about 37 per cent, of the nor- 

 mal ; this, after a year, of ten per cent, below normal. The total 

 loss in money is figured at around $100,000, or $1.35 per acre of 

 the total area. In this calculation, there is included a reduction 

 in value on the forced cut which was found to be on the aver- 

 age 2/3 cent per cubic foot, a reduction in the productivity of 

 stands due to the killing of timber of $30,000 and in the cost 

 value of destroyed cultures and young stands of $65,000. To re- 

 cover the damage in the plantations, some $35,000 will be re- 

 quired. The total cut of dead material necessitated by this 

 drought was 840,000 cubic feet timberwood, or something like 12 

 cubic feet timberwood per acre. 



The territory of the Harz Mountains suffered the most. Here 

 the cut was nearly 30 cubic feet per acre. The acreage of young 

 stands under 20 years which was entirely destroyed was around 

 1,250 acres, or about 2| per cent, of the total forest area. 



Among the observations of the difference of damage under 

 different conditions the following are of interest. Of pine plan- 

 tations, 20 per cent, were lost, while of pine sowings 40 per 



