43G JOURNAL 01-- FORESTRY 



example lo show the answer secured by using the old Indian formula, 



the French method of 188:}, and the ^ . _ formula. From the example 



V» R 



worked out it appears that the Indian formula (in the case sited) 



gives a yield of 23,23^ square feet, the French method of 1883 22,303 



square feet, while the Howard formula gives 18.094 square feet. Clearly 



the Howard formula is based on a rule-of -thumb method that doesn't 



require complete stock taking. It is open to the criticism that most 



formula methods are subject to. T. S. W.,- JR- 



Indian Forester, Aug., 1920, pp. 417-4.21; Dec, 1920, pp. C54-660; Jan., 1921, 

 pp. 44-48. 



C. Y. Trevor gives the growth data for Deodar, 



Growth Data Kail, Chir. spruce, and silver fir in three quality 



in British India classes based on inch diameter classes. For 



those desiring to plant any of these exotics from 



British India fairly reliable information as to the height and diameter 



growth can be secured. 



It appears that v^hen Dteodar is a 20-inch tree is it 90 years old and 

 76 to 106 feet in height; a 20-inch Kail pine (the Indian 5-needle 

 "blue" pine) is 72 years old and 69 to 100 feet in height ; while the 20- 

 inch Chir pine is 95 years old and 69 to 96 feet in height. The spruce 

 and silver fir (averaged together) reaches 20 inches in diameter 23 years 

 old and is then 67 to 108 feet in height. T. S. W., Jr. 



Indian Forester, Sept., 1920, pp. 339-451. 



UTILIZATION, MARKET, AND TECHNOLOGY 



Owing to the demand for information on the 



Bamboo and use of bamboo for paper pulp in British India. 



Paper Pulp in R. S. Pearson reviews in detail the resources, 



British India location, and qualifications of this product for 



the successful manufacture of pulp. He states 



the minimum amount admissable for a "going" plant is 20,000 tons of 



air-dried pulp per annum, and that extraction shall not cost over $5 



per ton for air-dried bamboo, f.o.b. mill. It thus appears that the 



raw material must have little or no local value and must be available 



in large quantities, easy to transport by water, and that the import 



