Plows, jointer 144 Scotch 143 Plumb-bob and plumb-line 206 Plumbing, house 234 Pod-bit 25 Portable farm engine 94 Post-hole diggers 204 Poultry feeding trough 222 Power conveyor 121 Power, generating mechanical 75 Power post drill 38 Power transmission 120 Pulverizers 155 Pump, air pressure 107 centrifugal 105 mule 84 jack 109 jacks and speed jacks 111 rotary 103 suction 101 Punches 37 Quantity of water to use in irrigation 118 Racks, feeding 217 sheep feeding 219 Rafter grapple 173 Rasp 35 Rasps and files 36 Ratchet-brace 40 Refrigeration 123 Reservoir for supplying water to farm buildings 120 Revolving hayrake 163 Riding plow 140 Ripsaw 21 Rivets 53 Rivet set 54 Road drag, split-log 220 steel 225 Road work 146 Roller 156 Roll filing 63 Roof pitches 200 truss 199 Root pulper 130 Rotary pumps 103 Round barn, economy of 196 Rule of six, eight and ten 199 Sand bands 187 caps 188 Sanitary pig-pen 210 Saw, hack 45 Scotch plows 143 Screwdriver 23 ratchet 24 Seed house trucks 226