Xll CONTENTS. 



CHAPTER III. 



PAGE 



MEASUREMENT OF STANDING TREES . . . 35 



1. Ocular Estimate 35 



2. Estimate of Volume by Means of Form Factors 36 



Table of Form Factors 30 



3. Estimate of Volume by Means of Volume Tables 39 



4. Measurement of Standing Trees by Sections 40 



5. Pressler's Method of ascertaining the Volume of Standing Trees . . 41 



CHAPTER IV. 



DETERMINATION OF THE VOLUME OF WHOLE WOODS. 43 



SECTION I. MEASUREMENTS EXTENDING OVER THE WHOLE WOOD . 43 



I. Measurement of all Trees 43 



II. Determination of Volume by Means of Sample Trees . . . . 43 



A. The Height is a Function of the Diameter . . .44 



,1. Description of the General Method 44 



2. Modifications of the Method 51 



a. Draudt's Method 52 



b. Urich's Method :>:> 



c. Robert Hartig's Method . . . . . . . . :>.s 



3. Comparative Accuracy of the Several Methods . . . tnt 



4. Determination of the Volume by Means of Form Factors 



and Volume Tables . . . . . \ . . . til 



B. The Height is not a Function of the Diameter . . . <'"> 



SECTION II. DETERMINATION OF VOLUME BY MEANS OP SAMPLE 



PLOTS 6<> 



SECTION III. DETERMINATION OF VOLUME BY ESTIMATE . . ,!> 



CHAPTER V. 

 THE AGE OF TREES AND WOODS . . . . 72 



1. Determination of the Age of Single Trees 72 



2. Determination of the Age of Whole Woods ... .74 



