TABLE OF CONTENTS. 



PAGE 



PREFACE V 



INTRODUCTION 



PART I. 



HAEVESTING, CONVEESION AND DISPOSAL OF 

 PEINCIPAL FOEEST PEODUCE. 



CHAPTER I. 

 TECHNICAL PROPERTIES AND QUALITIES OF WOOD, 



Section I. — Anatomy of Wood. 



1. Wood-vessels 6 



2. Wood-fibres 6 



3. Wood-cells 7 



4. Resin-ducts 7 



5. Medullary rays 8 



6. Annual zones 8 



Section II. — Chemical and Physical Properties of Wood, 



1. The woody skeleton of a tree 12 



2. Amount of water contained in wood 13 



3. Substances in wood, other than water and woody-tissue . . .14 



4. Heartwood and sapwood ......... 15 



Section III. — Shape of Trees 17 



Section IV, — Specific Gravity of Wood. 



1. General account 23 



2. Differences due to anatomical structure 25 



3. Differences due to substances contained in the tissues . . .27 



4. The different parts of a tree 29 



5. Determination of the specific gravity of wood 31 



6. Absolute weight of wood 33 



