84 JOURNAL, Ol* FORESTRY 



can be better and more simply determined from a series of small per- 

 manent sample plots on the different sites, to be cut over regularly 

 with the rest of the stand. Other advantages of the method described 

 are the more intensive and careful handling of the forest, and the 

 great simplicity and flexibility of the working plans. W. N. S. 



Seybold. Karl. Die forstzcirtscluift dcr Tafsachcn {iiatiirlicher lloilmald- 

 betricb). Forstwiss. Centralhl. 41 :40.-,-42fi. 1!)19. 



With most silvicultural systems that depend 

 Strife Removal upon natural reproduction, considerable damage 

 Cuttings is done to young growth by the removal of the 



older tress. This is particularly true where, as 

 in most cases, successive cuttings proceed away from roads and upward 

 on slopes. Under the system here proposed cutting begins half way 

 between main roads, in level country, and proceeds toivard the roads, 

 so that logs are not dragged over young growth. On slopes, cutting 

 strips lie up and down the slope. The system involves a preparatory 

 stage, with frequent light thinnings in the upper crown class over the 

 whole area until reproduction is established and two or three years 

 old. This preliminary stage is practically the same in all methods 

 relying on natural reproduction. The method described differs from 

 the strip selection system (Blendersaumschlag) in that the resulting 

 new stand in each compartment is even-aged or at most divided into a 

 few even-aged groups. It differs from the shelterwood system in that 

 the removal of the old stand is not carried on uniformly over the whole 

 area but is done unc\cnlv in strips or wedge-shaped patches. It is 

 claimed that damage l)Oth from windfall and from logging is very 

 small, while logging costs are kept down to a minimum. W. N. S. 



Eberhard. Was zvill dcr .■Ihn'icksuiiinsclilat/ (Keilsamiihctricb) ? Ivirstwiss. 

 Centralbl. 41 :44t-l48. ]'.)1'.). 



Suggests caution in planting white pine on a 



Tlie jrexiuoiitJi large scale in Germany, because it is susceptible 



Pine to blister rust {Peridermium strohi), it has a 



decided tendency to develop many branches which 



hang on even after they die, and so yields inferior lumber; and it is 



attacked by the pine barklouse (Chermes sir obi), which retards growth 



and even kills the trees or so weakens them that they are attacked by 



