ORIGINAL WORKING PLAN DATA 

 The results obtained are shown in the following table: 



503 



Composition of the Stands (Number of trees and volume). — The number of 

 trees 0.80 m. and over in circumference has passed from an average of 214 per hectare 

 to 203 and the volume from 343 m. c. per hectare to 353 m. c. 



The stands have not sensibly changed during the period 1883-1911; they are more- 

 over very nearly in the condition which is considered normal in the Jura except for a 

 slight shortage in volume of old timber. 



Growth in Volume, — The comparison of the inventories of 1883 and 1911 gives 



an excess in 1911 of 4,100 m. c. From 1883 to 1896 25,099 m. c. has been reahzed 



making a total of 73,053 m. c. From 1897 to 1911 47,954 m. c. has been cut. The 



77,153 ^„^ 



2,753 m. c; per 



total growth for the 28 years would be 77,153 or annually 

 2,753 m. 



hectare and per year 



364.86 ha 

 Growth Per Cent. — Average capital 



= 7.55 m. c. 



131,094 + 135,194 



average stand volume per hectare of 



133,144 

 36,486 



2 



365 m. 



28 



133,144 m. c. making an 



^ ,, , 7.55 X 100 ^ , 



Growth per cent tt^^ or 2.1 per cent. 



3bo 



We have not thought it possible to take account of the stock estimates of 1896 because 

 in comparing it with the inventories of 1883 and on the other hand with the inventory 

 of 1911 we arrive at results which do not appear to be admissible. 



Comparison of the inventories 

 of 1896 and 1883 



Comparison of the inventories 

 of 1896 and 1911 



Volume of the timber 

 0.80 m. in circum- 

 ference and over in- 

 ventoried 



Volume of the timber 

 0.80 m. in circum- 

 ference and over 

 realized 



1883 = 131,094 m. c. 

 1896 = 153,793 m. c* 

 i.e. 22,699 m. c. more 



From 1884 to 1896 = 25,377 

 Total growth in 13 years = 



48,076 or per year 3,698 

 Per hectare and per year 

 3,698 ,.,, 



3g^= 10.13 m.c. 



Growth per cent 

 10.13 X 100 - „ 

 7^^ = 2.6 per cent 



1896 = 160,534 m. c. 

 1911 = 143,062 m. c. 

 i.e. 17,472 m. c. less 



From 1897 to 1911 = 48,790 

 Total growth in 15 years = 

 48,790-17,472 = 31,318 m.c. 

 Per hectare and per year 



2,088 . ,_ 



8j6l = ^-^^ 

 Growth per cent 



5.47 X 100 , , 



5q^ =1.4 per cent 



Not including the compartment 25 which had not been inventoried in 1883. 



