330 PRIVATE FORESTRY IN FRANCE 



Growth. — From the measurement of selected plots over a period 

 of 14 years it appears "that the average annual growth on the circum- 

 ference is 0.0153 per tree and that the volume increases each year 

 by 0.0233." These figures apply to the trees 15 inches and over in 

 diameter. There are no figures for trees less than this but the growth 

 is estimated at 3 per cent. For the conifers the growth per cent was 

 fixed at 0.025. The amount to cut each year is therefore obtained by 

 multiplying the volume in each diameter class (above or below 15 inches 

 in diameter) by the per cents given above. The coppice is worked by 

 area. 



For each of the seventeen groups is given a digest of the growing stock 

 divided into coppice cuttings. For example : for the third working group 

 Chanteloup, 754 acres, 24 coupes; Coupe No. 1, area 47 acres; age of 

 coppice end of 1907, 19 years; volume of oak (reserves), under 15 inches 

 96.47; over 15 inches, 181.62 cubic meters; volume of conifers, 274.30 

 The total volumes are then footed and the following calculations made 

 growth of the oak, below 15 inches, 5,546 cubic meters X 0.03 = 166.38 

 above 15 inches, 2,439 cubic meters X 0.023 = 56.97; total, 223.35 

 Growth of the pine, below 15 inches, 2,300 cubic meters X 0.025 = 57.5 



This growth would sell as follows: 223 cubic meters at $6, -11,291 

 branches, 223 steres at 77 cents, $172; pine, 86 steres at 97 cents, $93 

 total $1,546. $1,546 capitaHzed at 4 per cent equals $38,600. 



"The product of the (coppice) felhng area when ripe is estimated at 

 $45 per acre. The net value per acre of the soil and of the coppice 

 amounts then to $30. This amount capitalized at 4 per cent represents 

 a value of $23,558 for the whole working group." A resume of all the 

 working groups is shown in Table 26 on opposite page. 



The "Domain of Rouillardiere," added to the forest of Amboise in 

 1885, comprises 126 acres. It consists of a magnificent coppice and 

 compound coppice. As a final valuation the forest is put at: 



Amboise 



Rouillardiere. . 

 Jameau ponds 

 Miscellaneous. 



The following deductions can be drawn from the foregoing 

 data: 



(1) The net income for 1906 was $10,135.34 on a capitalization of 

 $905,320.54. This shows a net yield of only 1.9 per cent, but it should 

 be recalled that the forest is being built up by the reservation of large 

 numbers of standards. Hence the real profit is 1.9 per cent plus the 



