270 TRANSACTION'S OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



more suitable .situations, and (2) the height-growth recorded in 

 the Table above is in many cases better than that at Taymount. 

 The planting was done in squares, the Douglas firs being placed 

 12 feet apart, and the interspaces filled with larch, so that the 

 trees stood 6 feet apart. An acre thus contained, theoretically, 

 1210 plants, of which 908 were larch and 302 Douglas firs. By 

 the year 1880 the larches had all been removed, and in 1887 the 

 Douglas firs were thinned, so that only 202 remained per acre. 

 The Douglas firs (600-700) removed from the eight acres- realised 

 by auction sale £34. There can be no doubt that too many trees 

 were removed at this time. What with too wide planting to 

 begin with, and too much thinning in 1887, the trees remaining in 

 the latter year were very rough and branchy, and about 1896 all 

 the branches to a height of 30 to 35 feet were pruned off. No 

 thinning has taken place since 1887. 



On July 20th, 1 888, Professor Schlich^ made a careful estimate 

 of the volume of the growing stock. By counting and measuring 

 the diameter of all the trees on yo ^cre, he arrived at the following 

 result, in terms of an acre : — 



Total number of trees, 202; Total Sectional Area, 158-17 square feet. 



The average sectional area is thus -783 feet, equal to a diameter 

 of 12 inches. 



An average tree was felled, and gave tlie following dimen- 

 sions : — 



Diameter at 4| feet from ground, . 11-78 inches. 



Sectional area, . , . -757 .sq. ft 



Total height, . . . .60 feet. 



Tr/ii/.s. Iliiiiul SmUish ArhoricvJtural Society, Vol. XII. ji. 226. 



