554 



XXVIII. MYRTACEAE 



The sample plots in question are situated in sal forest, and the rate of 

 growth shown is probably slower than what might be expected on moist 

 alluvial ground near streams. 



Ring-countings made in 1905 by Mr. D. A. Thomson in respect of nine trees 

 in the Supa fuel reserves, North Kanara, Bombay, gave the following results : ^ 



Eugenia Jambolana : rate of growth in Supa fuel reserves, North 



Kanara. 



Age in years . , . 5 10 15 20 



Mean diameter (inches) . 1-06 2-16 3-26 4-38 

 Corresponding girth (inches) 3-2 6-6 101 13o 



25 30 35 40 

 5-48 6-58 7-60 8-78 

 17-2 20-7 23-9 27-6 



45 50 55 

 9-82 10-73 1113 

 31-4 33-8 350 



A cross-section from the United Provinces in the silvicultural museum at 

 Dehra Dun, measuring 3 ft. 3 in. in girth, had 34 rings, representing a mean 

 annual girth increment of 1-15 in. Measurements in 1907 of eight planted 

 trees, sixteen years old, in the Thapal grant estate, Saharanpur, United Pro- 

 vinces, gave an average girth of 2 ft. 4 in. and an average height of 25-7 ft., 

 which shows that under favourable conditions the growth is fairly fast. 



2. Coppice. On fertile ground coppice-shoots grow rapidly. On ricli 

 alluvium along river banks in Gorakhpur, Oudh, coppice four years old showed 

 an average height of 15 ft. In Nellore, Madras, a height of 6 ft. was attained 

 by coppice-shoots in eight months.^ Measurements made in 1911 in the 

 Tikri forest, Gonda, United Provinces, showed for an age of two years an 

 average height of 7 ft., as against 7-6 ft. for sal. 



The following measurements made in 1886 by Mr. A. F. Bromi in the 

 Bullawala sal coppice, Dehra Dun, compare the rate of growth of Eugenia 

 JamhokiTha coppice with that of sal : 



Growth of Eugenia Jamholana and sal coppice, Bullawala, Dehra Dun. 



Mean girth. Mean height. 



Age. 



years. 



8 



8 



9 



10 



Eugenia. 

 in. 

 7-5 

 6-5 

 7-2 

 90 



Sal. 

 in. 

 8-3 

 71 

 8-7 

 5-9 



Eugenia 



ft. 

 16 

 14 

 10 

 14 



m. 



6 

 

 



Sal 

 ft. 

 16 

 13 

 13 



m. 

 2-5 

 1-9 

 5-5 



Working Plan for the Supa Fuel Reserves, 1907. 



11 10-6 

 2 Forest Report, 1909-10. 



