Forestry in America. 55 



up sound logical methods of silviculture, harmonized on the one side 

 with the interests of the forest and on the other with those of lumber- 

 men. Since the article was written lodgepole pine has been found to be 

 far less intolerant than had been commonly supposed. This would make 

 possible the application of the selection system which the author rejects, 

 but would not prevent the use of the group selection system which he 

 advocates. 



Border Cuitings: A Suggested Department in American Sil- 

 viculture. By A. B. Recknagel. Vol. VII, Xo. 2. 



A detailed description of an European method of silviculture applicable 

 only in accessible regions where intensive forestry is possible. Although 

 not practicable for America's present day conditions, the method is worth 

 knowing about for future reference. 



Siizicultural Systems for Western Yellozv Pine. By Earle H. 

 Clapp. Vol. VII, No. 2. 



This valuable paper brings together all the silvicultural information 

 gathered by tlie Forest Service concerning western yellow pine. It recon- 

 ciles the two opposing methods of handling the tree, the shelterwood 

 method, and the group selection. Mr. Clapp shows that the latter is 

 applicable to all but unfavorable situations on which reproduction requires 

 shelter. Here the shelterwood system is better for securing new repro- 

 duction. The difficulty is that under present logging conditions much of 

 the stand — up to two-thirds of the volume — must be removed at the first 

 cut, thus largely destroying the shelter. Furthermore the area cannot be 

 cut again for from 30 to 50 years, by which time the reproduction will 

 have been shaded out, or will be badly damaged by the removal of the 

 remaining well distributed portion of the stand. 



Natural versus Artificial Regeneration in the Douglas fir Re- 

 gion of the Pacific Coast. By Thornton T. Munger. Vol. VII, 

 No. 2. 



The author describes conditions in the Douglas fir region of the Pacific 

 Coast, and gives the pros and cons of both metJiods of regeneration. He 

 seems to be on the defensive throughout, and ends by saying that, except 

 in four exceptional classes which he mentions above, "natural regenera- 

 tion is practicable, reasonably sure of success, and as inexpensive as any 

 method of artificial regeneration." Such opinions will, it is hc^ed, lead 

 to thorough experiments to determine the applicability of both methods 

 before the Service commits itself to either. 



VII — Forest ATioN. 



Problems in Nursery Practice. Bv Clifford Robert Pettis. 

 Vol. IV, No. I. 



This paper forms a very valuable contribution to all work connected 

 with forest nurseries. It gives in a clear manner the essential details of 

 the author's experience in directing the work of the largest scientifically 

 managed forest nursery in the United States. 



