xviii TABLE OF CONTENTS 



CHAPTER XVI. 



SYLVICULTURAL NOTES ON TIMBER TREES continued. 

 CONIFEROUS TREES. 



Cupressus . . . . . > . 386 



Douglas Fir . . . . . . . . 3^9 



Larch v 392 



Pines . . . . . . . . 400 



Silver Fir ... v ' .- - . 4*4 



Spruce . . . . . 418 



Thuya .... ... 424 



CHAPTER XVII. 



MEASUREMENTS FOR PURPOSES OF FOREST MANAGEMENT. 



Height of Trees ....... 426 



Basal Area . . . . > ( . . . 427 



Form Factor . . . . '. '. . , . 428 



(1) Measurement of Sample Trees . : . * . . 429 



Weise's method ....... 430 



Other methods . . . . . . .431 



(2) Measurement of Sample Plots ..... 432 



(3) Estimation by Reference to Average Yield Tables . . 434 



CHAPTER XVIII. 



ESTIMATION OF INCREMENT ON CROPS OF TIMBER. 



1. Increment in Cubic Contents . . . --' . 437 

 Increment on Standing Timber . . . ; . , 441 

 Pressler's Formula , . . . .- . 443 



Schneider's Formula . . . . . . ' . 444 



Maw's Formula . .- < . . . 446 



Increment on Felled Timber . . * ' . 448 



Current Annual Increment * . ! . . 459 



Average Annual Increment 4 . . . 451 



2. Increment in Quality . * . i . .451 



3. Total Increment on Invested Capital s v . . 452 



