VI CONTENTS. 



vator Corn Shellcrs Burralls', Richards' Root Washer 

 Root Slicers Farm Mills, Allen's, Forsman's Emery 

 Cotton Gin 186-197 



PART II. MACHINERY IN CONNECTION WITH WATER. 

 CHAPTER I. 



IItdrostatics. Upward Pressure Mcasurinj^ Pressure Cal- 

 culatini? Strength of Tubes, ete. Artesian Wells Determ- 

 inim; Pressure in Vessels- A Puzzle Explahied Hydro- 

 static Bellows Press Specific Gravities Table of do. 

 Weight and Bulk of a Ton of Different Substances 198-210 



CHAPTER II. 

 Hydraulics. Velocity of Water Discharge of Water through 

 Pipes Velocity in Ditches Leveling Ditches Archime- 

 dean Screw-pumps For Cisterns Non-freezing do. For 

 Deep Wells Drive Pumps Chain Pumps Rotary do. 

 Suction and Forcing Pump Turbine Water Wlieels The 

 Water Ram Water Engines for Gardens Flash Wheel 

 Nature of Waves Size of do. Preventing Inroads by do. 

 Cisterns To Determine Contents of 211-238 



PART III.-MACIIINERY IN CONNECTION WITH AIR. 



CHAPTER I. 

 Pressure of Air. Weight of the Atmosphere Hand Fastened 



by Air Barometer Measui-ing Heights Syphon 239-245 



CHAPTER II. 

 Motion of Air. Winds Wind-mills, how Used Brown's do. 

 Causes of Wind Cliinmey Currents Construction of 

 Chimneys To Cure Smoky do. Chimney Caps Ventila- 

 tion 245-259 



PART IV. HEAT. 

 CHAPTER I. 

 Conducting Power Expansion, Great Force of Experiments 

 with Steam Engine do., for Farms Steam Plows 



Latent Heat Green and Dry Wood 200-276 



CHAPTER IL 

 Radiation. Several Examples in Domestic Economy Dew and 



Frost Frost in Valleys Sites for Fruit Orchards 276-280 



APPENDIX. 



Apparatus for Experiments 281-283 



Discharge of Water through Pipes 284 



Velocity of Water in Pipes 284 



Rule for Discharire of Water 2-8,5-286 



Velocity of Water in Tile Drains 286 



Glossary 287-296 



