CXXVI HENRIK HESSELMAN. 
is often important to check tbe clearing vegetation, theleconm- 
petition of which otherwise may be fatal to the tree-plants. 
The way in which we effect the transformation of the humus nit- 
rogen ought to be our leading idea in the carryan gg: omwtsomsom 
measures of forest regeneration. 
Principal terms used in »Detailed Investigations» (pp. 1031—1052). 
Granskog = spruce-forest. 
Tallskog = pine-forest. 
Hyggesvegetation = clearing-vegetation. 
Ståndortsanteckning = description of the vegetation. 
Undersökning av växternas nitrathalt = investigation of the nitrate-content of the plants. 
Stark (svag, ingen) reaktion = strong (weak, no) reaction. 
Kalhyggen av olika älder = clean clearings of different ages. 
Lagringsprof = stored samples of soil. 
ucka ==1g9ap- 
Brandfält = burn. 
För skogskultur svedd mark = ground burnt for forest cultivation. 
Kolbotten = charcoal-burning ground. 
Tjärdal = tar-hollow. 
