30 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



countings then made the following are the volumes, in cubic 

 metres, deduced for the average tree in adjoining compart- 

 ments : — 



Forest of Vassieux 



Volume of average tree 



Cmpt. i8 



•72 



Cmpt. 19 



73 



Cmpt. 21 



■56 



Together 



-661 



Remarks 



The average number of 

 trees per hectare is 346. 



Thus, on an average, each tree in Vassieux has a volume 

 15 per cent, less than in Marignac, and the number of stems 

 is II per cent. less. 



Without giving the table, we may say that the proportion of 

 timber proper {bois d^oeuvre) out of the cubic content exploited 

 was 26 per cent, less in Vassieux than in Marignac. 



Comparing now the results of the enumerations of the 

 Working-Plans in adjoining compartments we find as follows : — 



Comparison of the volumes per hectare, -75. 



It may then be said that the loss caused by the removal of 

 dead leaves in this place is 25 per cent. 



It may seem surprising that the loss in this instance is less 

 than in the first case given above, but the explanation is that, 

 in the first case, the stock was practically all beech, whereas in 

 the second it was only one-third beech, and the fine needles of 



