872 JOURNAL OF FORESTRY 



an elevation of 900 to 1,000 meters, mostly middle-aged, with some 

 mature coniferous timber. 



The "Brand," in northeastern Rossberg, was hit by a wind storm 

 which caused a very heavy windfall. Sawlogs and spar timbers are 

 the principal output from this region. Under State control, this will 

 become a productive forest region, whereas it never would under 

 private control. 



It is to be hoped that the problem of forest control will be solved at 

 an earlier date than appears probable at present. 



J. V. H. 



Root Grafting. By Philipp Flury. Schweizerische Zeitschrift fur 

 Korstwessen. 3 and 4: 37-41. 1919. 



Grafting of stems and branches of the same tree or same species is a 

 common occurrence. Occasionally branches of different species are 

 grafted, although this is merely a mechanical union by a smaller branch 

 becoming inclosed in a larger one, as mentioned in Dr. Klein's "Hand- 

 book of Forest Conditions," page 571. On page 574 the same author 

 mentions the common occurrence of root grafting of the same species. 



This paper presents the results of a study of root grafting and shows 

 that grafting occurs only in roots of one or more centimeters in 

 diameter and not in roots of only a few millimeters in diameter. A 

 study of root surface and distribution afforded ample material to ob- 

 serve grafting under different conditions. All grafts were found to 

 be in larger roots. Up to the present time no grafts of small roots 

 have been found. The contentions that pressure exerted for a long 

 period and favorable conditions of growth are necessary have been taken 

 into consideration, but in no case have the grafts been found, even in 

 dense mats of interlaced roots under heavy pressure, causing flattened 

 surfaces. 



Due to soil conditions, there occurs on the Brandiswold an unthrifty 

 planted stand of spruce and Weymouth pine about 60 years old. The 

 depleted soil consists of layers of fine sand and lime-lacking formations. 

 This condition causes a dense mat of surface roots. Close study re- 

 vealed no grafting in larger roots, although numerous roots were in 

 contact under pressure. Similar conditions existed in the Doppwalder 

 and in the Community Forests of the Canton Freiburg. 



No root grafting has been found in potted woody plants such as 

 spruce. In the fall of 1912 the author arranged roots of spruce, pine, 

 fir, beech, oak, and ash in various crosses and exerted pressure on them 



