2j6 



Coombe Plantation, Keswick. 



[JULY, 



amount of light. This is brought out in the girth curve, 

 the average girth being 54 ins. 



The sample tree (B) was taken from a somewhat crowded 

 position, and had apparently been suppressed between the 

 ages of 15 and 30 years, with the result that it has been 

 surpassed in height-growth by the sample tree (C) at 1,150 ft. 

 The average height reached by the group was 65 ft., and the 

 average volume 44 cubic ft. true volume, or 33 cubic ft. 

 quarter-girth. On the other hand, the average volume of 

 23 trees measured in the vicinity of the group was only 14*2 

 cubic ft. quarter-girth. 



The increment of the sample tree was 2*35 per cent, during 

 the last five years, and 2*5, 3*5, and 3*8 per cent, respectively 

 for the preceding periods of five years. 



Group C. — 1,150 ft. elevation; number of trees, 4. The 

 group lies on the banks of a shallow valley, with southern 

 aspect in general. The soil is moist and deep, and the 

 locality well sheltered. Under these conditions the sample 

 tree, which was a good representative of the group, reached 

 a total height of 62 ft., with a girth of 38 ins. at breast- 

 height, a form factor of '423, and a volume of 20*93 cubic ft. 

 true volume. 



The average volume of the group was 24 cubic ft. true 

 volume, or 18 cubic ft. quarter-girth. The average volume 

 of 19 trees measured in the vicinity of the group was 12*0 

 cubic ft. quarter-girth. The increment was 3 per cent, at the 

 a ge of 52, 2 '5 per cent, at 57, and for the last five years has 

 averaged about 2'2 per cent. 



Group D. — Elevation, 1,250 ft.; number of trees, 4. The 

 aspect is south-east, the slope gentle and moderately shel- 

 tered by other larch; with average soil conditions. The 

 sample tree was a good representative of its group, and had 

 a total height of 55 ft. 8 ins., a girth at breast-height of 

 36 ins., a form factor of "436, and a volume to 4 ins. least 

 diameter of 1 7*4 cubic ft. true measurement. The average 

 volume of the group was 14*5 cubic ft. per tree, and the 

 average volume of 17 trees in the vicinity 11 *o cubic ft. 

 quarter-girth. 



Group E. — Elevation, 1,500 ft.; number of trees, 3. This 

 group was felled in 1902. The aspect was south-east to east 

 and exposed, and the soil not more than 6 ins. deep. The 



