298 



INDEX. 



Corn Sheller, Horse-power 192 



Eichards' 192 



Corn Planters 155 



Cost of Implements and Machines. 117 



Cotton Gin, Emery's 196 



Conltcr for Plows 127 



Crested Furrow-slice 126 



Crosskill's Clod-crusher 150 



Crow-bar, a simple power 43 



Crown Wheels 60 



Cubic foot of different substances, 



Weight of 210 



Cultivator, or Horse-hoe 145 



" Claw-toothed 146 



Alden's Thill 146 



" Duck-foot 146 



" Two-horse 148 



" Harrington's 157 



Cutter for the Plow 127 



" Bar in Mowers and Keapers. 158 



D 



Dederick's Hay-press 185 



" Capstan 185 



Deep-tiller Plow, Holbrook's 126 



Deep Wells, Pump for. . . . , 220 



Dew and Frost ^ 278 



Discharge of water through pipes.. 284 



" " Eulefor 285 



Ditches, Velocity of water in.. 214, 286 

 " Leveling instruments for. .115 



Dog-power Churn 191 



Draught, Combined 96 



Draught of wheels, explained 37 



" Line of 95 



" Principles of 93 



" How to measure 94 



of Plows 95 



Drilling wheat 153 



Drills, Hand 157 



Drive-pump 220 



Dropper, attachment to reapers 162 



Dynamometer, applied to roads 85 



" Construction and use 



of 98 



" Self-recording 101 



" Waterman's 102 



" for rotary motion... 106 



Elevators for Hay 173 



Emerson's Chimney Cap 255 



Emery's Horse-powers ..188 



CottonGin 196 



Empire Wind-mill 251 



Endless-chain power 188, 189 



Engine, Garden 230 



Experiments, apparatus for 281 



F 



Falling Bodies, Velocity of 23 



" " Resistance of air on 25 



" " in vacuo 25 



Farm, Seventy-thousand-acre 8 



" implements, Construction 



and use of. 115 



" implements. Cost of 117 



" mills 195 



Finger-bar in mowers and reapers.. 158 



Flail, Old sort 187 



" Estimate of comparative work 



with 187 



Flash-wheel 231 



Flea, power of leaping .115 



Fly-wheel 16 



" used on horse-pump 16 



Forcing-pump 223 



Fork Handles, Proper form of 76 



Forsman's Farm Mill 195 



Friction 81 



" Nature of 82 



" How to Measure 83 



" not influenced by velocity. 88 



of axles 89 



' of wheels 90 



" Lubricating substances for. 91 



" Advantages of 92 



Frost and Dew 278 



" in valleys 279 



Fuel, Green wood for 275 



Furrow-slice, Crested 126 



Furrows, Lapping and flat 127 



Galileo's experiment on falling bod- 

 ies 26 



Garden Engine 230 



Garrett's Horse-hoe 147 



Geddes' Harrow 143 



Gladding's Hay-fork 175 



Glossary of terms 287 



Gravitation.. . .^ 9*J 



Gravity, Centre of. 34 



