IXDEX. 



301 



R 



Rake, Simple form of. 167 



" Revolvinj? 108 



" " Warner's 109 



" Spring-tooMi 170 



" " " Hollingsworth's.l71 



Ram, Hydraulic 226 



Raymond's Hay Elevator 178 



Reaping Machines daring the wan. 8 

 " Self-rakers for.. 161 



" " Headers 1&3 



" " How to select... 164 



Revolving Hay Rake 168 



Roads, importance of good ones.... 63 



" How to form the bed of 67 



" Measuring the friction on... 84 

 " Amount of resistance on 86 



" Good and bad 69 



" Ascent In 63, 60 



" Cost of going up and down 



hill 65 



Rocks, Machines for removing 62 



Rorkers, How to make 41 



Roiicra 152 



Rolling Mill, Principle of 74 



Root Washer 193 



" Slicers 194 



Rotary Spader, Comstock's 148, 117 



" Pump 222 



S 



Sack-barrow, a lever 48 



Sap, Ascent of. 33 



Scotch or Square Harrow 143 



Screw 70 



" Archimedean 217 



" Estimating power of. 71 



Seed Sower 153 



" " Harrington's 157 



Self-raking Reapers 161 



Seymour's Broadcast Sower 154 



Sliares' Harrow 145 



Side-hill or Swivel Plow 132 



Single-tree, Wier's 98 



Sowing Machines 152 



Specific gravities, how determined. 208 



Table of. 209 



Springs of water ,201 



Stacks, Building by machinery 182 



Steam engine, Construction of. 265, 267 

 " " for farm purposes.... 270 



Steel Plows 120 



Steelyard 47 



Stone-lifter 62 



Straw-cutters 16, 75 



" carrier, Pitts' 190 



Strength of materials 29 



" " wood, iron, and ropes. 30 



" " rods and bars 79,80 



" " pipes, To determine... 200 



Stubble Plow, Holbrook's 126 



Stump-puller 54 



Subsoil plowing 133 



" Plows 135 



Swivel Plow 132 



Syphon 244 



" used for draining 243 



T 



Teeth of wheels 58 



Thill-cultivator, Alden's 146 



Thrashing by machinery 187 



" machine, Comparative 



cheapness of. 188 



Thrashing machine, Endless-chain 



power for 188 



Thrashing machine, Pitts' 190 



Toggle-joint power 71 



Tread horse-powers 188 



" " " To determine 



Avork of 188 



Turbine Water-wheel 223 



" " " Reynolds' 224 



" " " Van de Wa- 

 ter's 224 



U 



Universal joint 60 



Upward pressure of liquids 198 



V 



Vacuum, Machine running in 11 



Velocity affects friction but slightly. 88 



" of falling water 211 



" of water in ditches .... 214, 286 



" " through pipes 284 



Ventilation 257 



" through walls and gar- 

 rets 258 



Ventilator, Griffith's 258 



" Emerson's 255 



Virtual velocities, Law or rule of... 43 



