Periodical Literature. 91 



of the apparently poor plant material excels the more expensive 

 plantation and comes near in results to the sowings. 



Indications are that natural regeneration of the spruce may on 

 these recovered soils be the proper method in future. 



In another part of the district, broadleaf forest, oak and beech, 

 was to be, and was continued. 



Interesting is the author's explanation that lack of distinction of 

 the two species of oak, petiolata and pedunculata, which were then 

 still supposed to be one species. The original growth had 

 been mainly pedunculata, but the ease with which seeds of petio- 

 lata could be secured from the planted trees around farm yards 

 led to the use of the latter, especially as it is a much more abun- 

 dant seeder. But it so happens that it is also more choice of soils 

 and was not adapted to the run-down soil of the heath. However, 

 when the unpromising development had apparently doomed a 100- 

 year old stand as a failure, under Burkhardt's direction 5/6 of 

 the trees were cut out and the rest underplanted with beech with 

 a view of changing to that species. The result has been marvel- 

 ous. The oaks lost their lichen cover, their boles became smooth, 

 the influence of the beech cover stimulated the old trees to vig- 

 orous height growth and promising first-class material production 

 — an indication how this oak must be treated. 



Larch and White Pine also were tried, the first with greatest 

 promise at the start, eradicating the heather, but later falling vic- 

 tim to its enemies. 



White Pine planted widely in the sixties as a stop gap, begins to 

 fail on account of the woolly aphis, which threatens to exterminate 

 it. 



The very interesting account accentuates that in silvicvilture the 

 short time experiences may be very misleading and that it is 

 dangerous to run off readily into new theories, and condemn too 

 early apparently faulty practices, which may secure ultimate 

 success. 



BcstandesgeschichtJiches aus der Oberforsterei Harburg. Allgemeine 

 Forst- und Jagdzeitung. November, December, 1911. Pp. 813-831 ; 899- 

 907. 



