CONTENTS. 



CHAPTEE I. 



DEFIXITIONS. 



Forestry — Sy 1 v ioulture — A rboricul ture — Sciences i n vol ved — Trees — A 

 Species — A Genus — A Natural Order — Names used in scientific de- 

 scriptions 1-4 



CHAPTER II. 



OP SOILS AND THEIB PKEPARATION. EFFECTS OF SLOPE AXD ASPECT. 



Composition of Soils — llumus — Loam — How they affect the Growths of 

 Trees — Silecious, Calcareous, Argillaceous, and Alkaline Soils — Color 

 of Soils — How affected by underlying Rocks — Preparation for plant- 

 ing — Effect of Slope and Aspect — Degrees of Inclination 4-10 



CHAPTER III.- 



OF CLIMATE AXD MEIEOROLOGICAL INFLUEKCES. 



Definition of Climate — The Atmosphere and its Elements — Oxygen — 

 Nitrogen — Carbonic Acid Gas — Aqueous Vapor — Absolute and rela- 

 tive Humidity — Effect of Heat and of Cold — Dew — Fogs and Clouds 

 — Rains — Effect of Woodlands — Evaporation — Percolation — Tem- 

 perature of Soils — Winds — Agency of Water in Vegetation — Effects 

 of Frost — Injuries from Snow — The Timber-line — Decline of Frult- 

 pvoduction — Ruin from clearing off of Forests — Probable Effects in 

 Western Territories , 10-28 



CHAPTER IV. 



KEPRODgCTIOS FROM SEED. 



The Blossom — Fertilization —Distribution of Tree-seeds— Dispersion by 

 Winds, by Animals, by Water — Early-ripening Seeds — Gathering 

 and keeping of Seeds, Nuts and Acorns — Germination — Time of 



sowing or planting — Vitalitv of Seeds 28-36 



(V) 



