INDEX 



Acceleration, gravity, 56 

 Acids, 135 



importance of, 136 



mineral, 137 



nature of, 136 



nomenclature, 140 



organic, 137 

 Action, chemical, 131 

 Adhesion, 3 

 Air, 



dry, absorbs moisture, 110 



moisture contained by, 91 



pneumatic tools, 94 



properties of, 90 



pumps, 93 



use in sand blast, 96 

 Alkalies, 135, 136 



formation of, 139 



nomenclature, 140 

 Ammeter, 179 

 Ampere, 172 

 Analysis, chemical, 129 

 Aneroid barometer, 90 

 Arc lamp, 117 

 Area, rules for finding, 18 

 Armature, 192, 193 

 Ash, 394, 409 

 Atomic weight, 128 



B 



Bacteria, chemical, 149 

 Bacteriology, 1, 2 

 Ball bearings, 50 

 Barometer, 88-90 



aneroid, 90 



history of, 89 



kinds of, 89 



principle of, 88 



Bases, 135 (See also "Alkalies") 

 Basswood, 408 

 Beaume hydrometer, 83 

 Beech, 394, 408 



Belting, 



canvas, 285 



fastening, 286 



leather, 285 



measure of coiled, 287 



sag of, 286 

 Bichromate cell, 175 

 Birch, 394, 408 

 Bleaching, 161 

 Block and tackle, 35 

 Blue-print, 231 

 Boilers, 302-327 



care of, 320 



chimneys, 322 



clearing, 319 



construction of, 305 



fire-tube, 303 



firing, 321 



joints, 306 



of steam engines, 302 



principal parts of, 310 



pumps, 314-316 



repairing, 310 



return tubular, 303 



safety valves, 311 



terms used in calculations, 325 



testing for defects, 309 



thickness of plate, 307 



water gauge, 313 



water-heater, 318 



water-tube, 304 

 Boiling point, 106 

 Bolts, 252-258 

 Boring machine, 435 

 Botany, 1, 2 

 Boyle's Law, 93 

 Brace and bit, 426 

 Brakes, 365 

 Bricks, 160 

 Brittleness, 3 

 B. T. U., 103 

 Buoyancy, 



law of, 78 



stability of ship, 79 

 Burnishing, 277 



447 



