256 Forestry Quarterly 



pectation. Belgian and Russian seed has been found acceptable 

 and, therefore, no reason for keeping it out exists. The exclusion 

 was ordered only on account of the fear that other seed might find 

 their way into the country by way of these countries. It is sug- 

 gested that "every reliable seed-dealer will guarantee for five 

 years the derivation of the seed, when the plants permit a judg- 

 ment of the derivation." 



Similar conditions in the spruce seed supply exist. A change in 

 the method of procedure is most necessary. 



Weshalb ist der Kiefernsamenjetzt so teuer? Naturwissenschaftliches Zeit- 

 schrift fur Forst- und Landwirtschaft, July, 1914, pp. 368-374. 



This is a report of experiments in pro- 

 Thinning gress from 1905 to 1910 in thinning a stand 



Douglas of Douglas fir in the district of Aurach 



Fir (Gmunden). Three sample plots were 



thinned, one lightly in the upper story, the 

 second moderately in the lower story, and the third severely in 

 the lower story. Measurements were made annually. The abso- 

 lute growth in section and volume was nearly the same during the 

 five years, though the relative growth was naturally greatest on 

 the third plot. 



In 1910, the average increment per class according to age, that 

 is, when the plantation was 23 years old, was 137 cubic feet per 

 acre for the first plot, 171 for the second and 150 for the third. 

 The writer considers Douglas fir a good tree for spruce soils, 

 and suggests that, starting with rather dense plantations, 1,800 

 to 2,000 trees per acre, thinning should be practised, especially 

 in the upper story, leaving the underwood. 



S. J. R. 



Ein Durchforstungsversuch in Douglas-Tanne {Pseudotsuga Douglasii Carr). 

 Mitteilungen aus dem forstlichen Versuchswesen Osterreichs, 1914, XXXVIII 

 Heft, S, 9-34. 



Zederbauer of the Austrian Experiment 

 Effect Station reports on the behavior of planta- 



of tions with and without exclusion of cattle. 



Grazing The results show that: (1) "spruce plan- 



tations enclosed or with supports made a 

 stronger growth than those without this protection; (2) enclosed 

 spruce plantations at 10 to 20 years contained about two-thirds 



