762 XLVI. VERBENACEAE 



of curves, or different standards should be fixed in different localities. Mean- 

 while he has grouped them all together, and has obtained the following 

 results : 



Tectona grandis : rate of growth and number of stems per acre in teak 

 plantations in Burma (F. A. Leete, 1909). 



Xote. (1) Suppressed stems are not included ; (2) original spacing 6 ft. by 6 ft. or 12 ft. by 

 3 ft. giving 1,210 plants per acre. 



As compared with an estimate formed by Mr. P. J. Carter in 1S96. Mr. 

 Leete 's figures show a faster rate of growth in girth and a smaller number of 

 stems per acre. 



Central Provinces. Measurements made in 1896 in the Sakata and Korai 

 plantations in Seoni gave the following results : ^ 



Tectona grandis : measurements in Sakata and Korai jilantations, Seoni. 



No. Locality. 



1 Sakata 



2 



3 Korai 



In the Sakata plantations the trees were reported to be very dense and in 

 need of thinning, hence the poor girth increment. 



Madras. A small jjlantation of 1868 at Ramanapenta in West Kurnool, 

 measured in 1911, at an age of 43 years, had a height of 60 ft. and a girth 

 varying from 2 ft. 8i in. to 3 ft. 6i in. The waterfall plantation at Mount 

 Stuart, South Coimbatore, measured at an age of 42 years, had a mean height 

 of 68 ft. and a mean girth of 2 ft. 9 in. 



In his recent working plan for the Nilambur teak plantations Mr. Bourne 

 has given yield tables based on extensive measurements in those plantations, 

 and containing outturn figures in considerable detail. The statement on 

 p. 763 gives a summary of the more important figures contained in those 

 tables. 



Andamans. Measurements made in 1910 gave the following results : 



Year of plantation. Age. 



years. 

 1890 20 



1889 21 



1887 23 



1883 27 



2. Natural forest, {a,) Girth aiid height increment. Burma. The statements 

 facing ]). 764, compiled from measurements recorded in the various working 

 ^ Working Plan for the Korai Range Forests, F. Linnell, 1896. 



