FARM IMPLEMENTS AND MACHINERY, 
AND THE 
Principles of their Construction and Use: 
WITH 
SIMPLE AND PRACTICAL EXPLANATIONS 
OF THE 
LAWS OF MOTION AND FORCE, 
AS APPLIED ON THE FARM. 
With 287 Tlustrations. 
By JOHN J. THOMAS. 
or 
CONTENTS. 
PART I.—MECHANICS. 
Caaprer I.—InrRopuction.—Value of Farm Machinery—Importance of a 
“Knowledge of Mechanical Principles. 
Crarrter II.—General Principles of Mechanics. 
Cuarter III.—Attraction. 
Cuapter IV.—Simple Machines, or. Mechanical Powers. 
CuaprTeR V.—Application of Mechanical Principles in the Structure of Im- 
3 plements and Machines. 
CuarTER VI.—Friction. . 
CuaPTer VII.—Principles of Draught. 
CuHaprer VIIL.— pence oe of Labor. 
CnarteR IX.—Models of Machines. E 
Cuarter X.—Construction and Use of Farm Implements and Machines— 
Implements of Tillage, Pulverizers. 
Cuaprer XI.—Sowing Machines. 
Cuarrzer XII.—Machines for Haying and Harvesting. 
CuapPTerR XUI.—Thrashing, Grinding, and Preparing Products. 
PART II.-MACHINERY IN CONNECTION WITH WATER. 
CHaptTer {.—Hydrostatics. 
CaarTer II.—Hydraulics. 
PART I.—MACHINERY IN CONNECTION WITH AIR. 
Cuarter I.—Pressure of Air. 
CuarTerR II.—Motion of Air. 
PART IV.—HEAT. 
CuaptTer I.—Conducting Power—Expansion, Great Force of—Experiments 
with—Steam Engine—do. for Farms—Steam Plows—Latent Heat— 
Green and Dry Wood. 
Carter II.—Radiation. 
APPENDIX. 
Apparatus for Experiments. 
Discharge of Water through Pipes. 
Velocity of Water in Pipes. 
Rule for Discharge of Water. 
Velocity of Water in Tile Drains, 
Glossary. 
Price, Post-paid, $1.50. 
ORANCE JUDD & CO., 
245 Broadway, New-York. 
