Calendar: 1860-1861 Page 121

122 APPLIED SCIENCES Wheel Work -Transmission of Motion by Bands Altering Direction of Motion Velocity of Bands Strength of Bands Gearing Toothed Wheels Pitch Form of Teeth Epicy- cloidal Involute Mortice Wheels Worm Wheels Racks Lantern Wheels Bevel Wheels Mitre Wheels Crown Wheels Annular Wheels Speeds Powers Methods of calculating Strength of Teeth Ratchels Cams Clocks and Watches The Pendulum the Laws which govern its action the various forms of Escapement the Lever Watch the Chronometer Details of Construction the Striking part of Clock Second Yeah Boilers -The Formation of Vapour its Properties the Pressure of Steam Varieties of Boilers Haystack Cylin- drical Egg-ended Tubular Cornish Multi-tubular Strength of BoilerPlate Method of Rivetting Seams Heating Surface Fuels Wood Coal Coke Grate Area Flues Chimney Economy of Boilers Methods of Consuming Smoke Methods of Preventing Explosion and Collapse Rules to be observed in Cases of Danger Boiler Fittings-Safety-valves Floats Gauge Cocks Pressure Gauges Feed Pumps Injectors Priming and Methods of preventing it The Steam Engine Stationary Locomotive Marine Atmospheric High Pressure Low Pressure Coudensing Non-condensing Expansion Meaning of the terms High Pressure Non-condensing Steam Engine Outlines of its Early History Details of Construction of the Stationary Hig"h Pressure Non-condensing Engine the Slide Valve Indicator Lap and Lead of the Valve Cylinder Piston Beam Parallel Motion Connecting Rod Crank Fly-wheel Governor Eccentric High Pressure Expansive Condensing Engine Economy of Expanding and Condensing "Cutoff best point of cut off for given Pressure of Steam Con- denser Air Pump Cold Water Supply