147. 



o,. Growth In the ft&Oarcu-for U-tand. Schwappach's figures \vill 

 be used irf~the tholes given here. He worked them up for spruce, pine, 

 beech and for oak, in separate book^s. A few have been selected "by fcr. 

 Roth for t'iis topic. 



Volume growth of stand. This table gives the average volume of 

 cordwood on Site I, on fi fully stocked acre; the figures are based on 

 nctual measurements taken every 5 years & under the direction of the 

 German Experimental Stations. 



L'pruce . Vo 1 . gr o v; tj I c d wd . Site I. 



The "main stand* is the Principal stand; the secondary stand is 

 the thinnings, 



Notice the current growth: at 120 years it grew 1/3 aa much as at 

 40 yea:-3. At 60 years it grows leoi> than 2>* in volu/oe; this is a small 

 interest on the capital after 60 years. 



It ia greatest at 80 years, 



The averagg growth le tot A 



which is later than the cur ---- S-.rent growth. 



The next table ia for spruce on Sites 1,11,111,17,7, trees above 

 #2 es in diameter: main stand plus thinnings;in hundred cu.ft.: 



Total growth per acre . 



^e 1: at 60 years there were nearly cords per acre. This is 

 about the maximum, 



Site II should have f the timber on Site I, ) 



Site III should have J the timber on Site II.) Stock figures. 



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