Current Literature. 225 



diseased trees ; /. dry, broken, bent trees. This classification 

 permits, wiiere needful, notation of the precise nature of the 

 specimens, as lid, a codominant tree but with a damaged crown; 

 and notation of the character of the thinning, as "severe thin- 

 ning in the dominated" = removal of III and IV and class a — f 

 of I and II ; "moderate thinning in the dominant" := removal of 

 classes ^ ad / in all groups, and of a — d in groups II and b — d 

 in group I. 



While it is easy to carry out this classification in pure and 

 even-aged stands and to designate beforehand what is to be taken 

 in the regular thinning, it is more difficult to handle it. in mixed 

 and uneven-aged stands. Yet, while here the Danish method 

 of Heck's prescription alone can be applied the classification is 

 useful in describing what has been taken. A number of tables 

 exemplifies the procedure, which show to the study of what de- 

 tails this system of classification invites. 



This classification, the author suggests, may also advantage- 

 ously be used on strip surveys, and wherever sample tree methods 

 are in place. Especially for Canadian foresters who in the East- 

 ern Provinces deal with conditions not unlike the Swedish, it 

 would pay to acquire the language in order to follow this litera- 

 ture in detail. B. E. F. 



Forest Conditions in Louisiana. By J. H. Foster- Bulletin 

 114, U. S. Forest Service. Washington, D. C. 1912. Pp. 39. 



The author divides the State into six topographic and forest 

 regions, namely the shortleaf pine uplands, the longleaf pine re- 

 gion, the alluvial region, the bluff region, the prairie region, and 

 the sea-marsh region. The short leaf pine uplands occur mostly 

 in the northwestern portion of the State, although there is a rela- 

 tively small region east of the Mississippi river and south of the 

 Mississippi State line. The shortleaf pine occupies the higher 

 and more hilly portions of the State, where the soil is for the 

 most part a sandy loam. The pine is in pure stand on the ridges, 

 while the lower slopes and creek bottoms support various oaks, 

 red gum, ash, hickory, beech, maple, and yellow poplar. On the 

 intermediate lands, these species are mixed with short-leaf and 

 loblolly pine. The greater portion of the shortleaf forest has 

 been culled. In the older lumbered districts small operators 



