402 



CONIFERS. 



[Cedrus. 



No. Rings. Radius. Rings per 



inch, 

 the first giving 90, the second 122 years to a girth of 6 feet. 



Gund Forest (Giri Valley) a deota forest, ) 1 117 11 11'54 



low { 2 155 11-5 13-47 * 



averaging 12'5 rings, or an age of 140 years at 6 feet ; the great age being accounted 

 for by their having evidently grown up in a close thicket when young. 



Cheog forest, 7,000 feet, 9 trees averaging 106 13'5 8 



or by calculation 90 years for a girth of 6 feet. 



For the " Valuation of the Water-catchment Area at Mahasu near Simla, 1877 " 

 (Indian Forester, vol. v., p. 139), the following measurements of Deodar stumps and 

 were made : 



The stumps, it will be seen, gave an average of 9'67 rings per inch of radius, (ho 

 countings In-ing made in a radius of 9 inches. This gave 87 years as the a-c <>f ;i 

 tree 4 feet in girth at base, or, allowing for bark, about 4\ l\vt ;irtli breast high. 

 On the same calculation 6 feet girth trees would be 111 years old. This is a slower rate 

 than in the neighbouring forests of Simla and I'heog, but the difference is explained 

 by the Mahasu trees being at least 500 feet higher in altitude than those localities. 

 The 82 Jpoles gave an average of 8*8 rings per inch of radius for an average a- 



