LARCH. 21 



lected from others, he finds the annual in- 

 crease in circumference of the larch, at six 

 feet from the ground, to be one inch and a 

 half, on an average of several years ; and that 

 this inference has been drawn from the actual 

 admeasurement of larches in different parts of 

 England and Scotland, and of different ages, 

 from ten years old to fifty. Mr. Hart says, 

 the larch grows slowly the first four years; but 

 in twenty years it will exceed the fir-tree, both 

 in height and circumference, that is double 

 its age. Eight trees being measured in the 

 spring and autumn of the year 1794, the 

 average of their increase in height was nearly 

 three feet nine inches and a quarter; and one 

 of them increased three inches in circum- 

 ference at two feet above the ground. In 

 another plantation, the trees at eight years' 

 growth measured above twenty feet in height 

 on an average: the trees were from six to nine 

 inches high when planted. At twelve years 

 old they measured, on an average, from thirty- 

 four to thirty-six feet in height ; and this in- 

 crease is continued until the timber is nearly 

 ready to be felled. 



In the Memoirs of the Royal Society of 

 Agriculture at Paris for 1787, there is an ac- 

 count of some birch-trees in some parts of 



c 3 



