Practical Mechanics for Boys

• Periphery, 73.
• Permanganate of potash, 178.
• Perpendicular, 105.
• Perpetual motion, 128.
• Perspective, 97, 106, 107.
• Petroleum, 168.
• Phenomenon, 91, 153.
• Phonautograph, 90.
• Phonograph,-91, 154.
• Phosphorus, 149.
• Photographer, 157, 172.
• Piano, 158, 159.
• Pinion, 57, 74.
• Pitch, 121, 125, 156.
• Pitch, circle, 122, 124, 125.
• Pitch, diameter, 123, 124.
• Pitch, line, 123, 124, 127.
• Pitman, 70.
• Pivots, 70, 130.
• Planer, 26, 50, 51, 126.
• Plaster, 173.
• Plaster of Paris, 150, 174.
• Plate, 73.
• Plates, 50.
• Plating, 173.
• Platinum, 81.
• Plumbago, 173.
• Poles, 155.
• Polishes, 174.
• Position, 102.
• Potash, 116, 167.
• Potash, prussiate, 113.
• Potassium cyanide, 170.
• Potassium nitrate, 167.

• Pound, 145, 157, 180.
• Power, 128, 129, 130, 131, 133, 134, 140, 158, 159, 186.
• Power, horse, 139, 140.
• Precision tools, 50.
• Preliminary statement, 191.
• Pressure, 134, 135, 137, 148, 152.
• Prime mover, 134.
• Printing telegraph, 155.
• Prism, 92, 93.
• Protractor, 108, 109.
• Prussiate of potash, 113.
• Pulley, 68, 70, 73, 128, 133, 140, 149, 150.
• Pulsation, 153.
• Pumice, 83.
• Pumice stone, 110, 175.
• Punch, 62, 63.
• Punch, centering, 62.
• Punch cutter, 24.
• Putty, 175.

Q

• Quadrant, 102, 103.
• Quality, 157.
• Quarter, 180.
• Quartz, 182.

R

• Racks, 73, 74.
• Radius, 52.
• Rake, 29, 30, 38, 42, 43,45.
• Rainbow, 92.
• Ratchet, 77.

• Ratchet brace, 77.
• Reciprocity, 82.
• Reflected, 92.
• Reflecting, 89.
• Reflection, 88, 91.
• Refraction, 92.
• Resin, 176.
• Resistance, 79, 82, 83.
• Resonance, 89.
• Rim, 96.
• Ring, 96.
• Rods, 180.
• Rosemary, 166.
• Royalty, 193.
• Rubber, 84, 163.
• Rule, 53.
• Rule, key-seat, 53, 54.
• Rust preventive, 175.

S

• Saffro, 170.
• Sal ammoniac, 119, 162, 165, 176, 185.
• Salt, 165, 170, 183, 185.
• Sandarac, 169, 176.
• Saw, 26, 64, 76.
• Saw, wabble, 76.
• Scale, 100, 101.
• Science, 157.
• Scraper, 50, 51.
• Scribe, 47, 53.
• Scruples, 180.
• Sealing wax, 176.
• Section lining, 103, 104, 110.

• Sense, 159.
• Sesame oil, 176.
• Shade, 96.
• Shading, 96, 110.
• Shaft, 68, 69, 70, 73, 74, 75.
• Shaft coupling, 74.
• Shaper, 26, 50, 51, 53.
• Shellac, 163.
• Side cutters, 30.
• Sienna, 168.
• Signals, 87.
• Silicate, 168.
• Silver, 82, 118, 164, 165, 180, 183.
• Snow, 185.
• Soap, 165, 172.
• Soap spirits, 166.
• Soda, sulphate, 172.
• Sodium carbonate, 172.
• Sodium silicate, 168.
• Sodium sulphate, 172.
• Solder, 118, 175.
• Solder, hard, 118.
• Solder, soft, 118.
• Soldering, 116, 117, 119, 176.
• Solids, 84.
• Sonorous, 88.
• Sound, 87.
• Sounding-boards, 88.
• Spanish white, 168.
• Spectroscope, 90, 93, 161.
• Spectrum, 93.
• Speed, 43.
• Spelter, 118.

• Sphere, 97.
• Spiral, 78.
• Sponge, 83.
• Spring, 72, 79, 176.
• Square, 48, 61, 63.
• Square combination, 24, 77, 81.
• Starch, 162, 163, 164.
• Steel, 39, 40, 42, 44, 63, 79, 113, 165, 168, 169, 170, 184.
• Stethoscope, 90.
• Stove polish, 174, 175.
• Straight edge, 61.
• Stylus, 90.
• Sugar, 163.
• Sulphate of copper, 174.
• Sulphate of potash, 115.
• Sulphate of soda, 172.
• Sulphur, 167, 183.
• Sulphuric acid, 165, 169, 175.
• Surfacing, 49, 50, 63.

T

• Table of weights, 178.
• Talcum, 169.
• Tallow, 176.
• Tannaform, 169.
• Taps, 45.
• Taste, 160.
• Teeth, 72.
• Telegram, 158.
• Telescope, 91, 92.
• Temperature, 82, 88, 114, 116, 118, 119.
• Temperature table, 180.

• Tempering, 113, 114, 115,176.
• Tenacity, 79, 80.
• Thread, 74.
• Thymol, 166.
• Tin, 98, 118, 175, 176, 184.
• Ton, 180.
• Tongs, 75.
• Tongs, lazy, 75.
• Tool, 22, 28, 40, 41, 61, 64, 71, 108, 113, 175.
• Tool boring, 43.
• Tool cutting, 26, 29, 45, 64.
• Tool holder, 64.
• Tool hook, 28.
• Tool, hooked, 44.
• Tool knife, 28.
• Tool, parting, 28.
• Tool, roughing, 29.
• Tools, precision, 50.
• Torsion, 79.
• Toughness, 114, 115.
• Tracing cloth, 110.
• Tracing paper, 172.
• Traction, 79.
• Transmitting, 158.
• Transparent, 163.
• Transverse, 80.
• Treadle, 78.
• Triangular, 97, 98.
• Tripping driver, 78.
• Turmeric, 170.
• Turpentine, 162, 165, 172, 173, 174, 175.
• Turpentine, Venice, 176, 177.

U

• Ultramarine, 171.
• Undivided, 192.
• Undulatory, 91.
• Unguent, 114.

V

• Valve, 70.
• Vapor, 87.
• Varnish, 162, 170, 172, 175, 176.
• Vaseline, 165, 175.
• Velocity, 81, 87, 91.
• Vermilion, 177.
• Vertical, 97.
• Vibrate, 160, 161.
• Vibration, 87, 88, 90, 158.
• Vibratory, 91.
• Vinegar, 163, 170, 173.
• Violin, 159.
• Vise, 33.
• Vitascope, 90.

W

• Water, 165, 166, 168, 172, 183, 186, 187.
• Waterproof, 162, 163.
• Weight, 85.
• Weight of steel, 179.
• Weight, troy, 180.
• Welding, 115, 116, 117.
• Welding compound, 117.
• Wheel, 27, 72, 73, 85, 86.
• Whiting, 174.
• Workshop, 162.
• Wrench, 104.

Y

• Yokes, 70, 76.

Z

• Zinc, 118, 119, 164, 166, 175.
• Zinc chloride, 163.