Vlll CONTENTS 



PART II. FOREST MAPS 



PAGE 



SECTION I. THE TRANSIT 73 



1. Adjustments . '. 73 



2. Care of the Transit 77 



3. Stadia Measurement 77 



4. Uses of the Transit 80 



5. Summary 87 



SECTION II. THE LEVEL 87 



1. Adjustments 88 



2. Uses of the Level 90 



SECTION III. THE HAND LEVEL AND CLINOMETER . . 93 



SECTION IV. COMPASS AND PACING 94 



SECTION V. THE TRAVERSE BOARD 98 



SECTION VI. THE ANEROID BAROMETER 103 



SECTION VII. METHODS OF MAP MAKING 113 



1. Introductory . . . 113 



2. Small Tracts 117 



3. Large Tracts 121 



A. With Land already subdivided 121 



B. Based on Survey of Roads or Streams . . . 121 



C. Subdivision and Survey combined 123 



D. Western Topography. Use of Clinometer . 129 

 SECTION VIII. ADVANTAGES OF A MAP SYSTEM . . . 133 



^PART III. LOG AND WOOD MEASUREMENT 



SECTION I. CUBIC CONTENTS 137 



SECTION II. CORD WOOD RULE 138 



SECTION III. NEW HAMPSHIRE RULE 138 



SECTION IV. BOARD MEASURE 139 



1. General 139 



2. Scribner and Decimal Rules .......... 141 



3. Spaulding or Columbia River Rule 141 



4. Doyle Rule . 141 



5. Maine Rule 142 



6. New Brunswick Rule 144 



7. Quebec Rule 145 



8. Theory of Scale Rules and Clark's International 



Log Rule . . . 145 



SECTION V. NEW YORK STANDARD RULE ..... 147 



SECTION VI. SCALING PRACTICE 148 



SECTION VII. MILL TALLIES . . 151 



SECTION VIII. CORD MEASURE . 157 



