INDEX 



475 



Mechanical drawing Supplies 

 Continued 



erasers, 228 



India ink, 231 



lead pencils, 225-227 



perspective drawing, 230 



required, 225 



tracing cloth, 230, 231 



working drawing, 229 

 Mechanical principles, 24 



of machines, 22-25 

 Mechanics of liquids, 68-85 

 Mercerizing, 164 

 Mercury, 



properties of, 449 



uses of, 450 

 Metals, 



brazing, 457 



shears for cutting, 457 



sheet, 441-459 (See also "Sheet 

 metals") 



weight per cu. in., 241 

 Metal trades, value of, 369 

 Metric system, 13-16 

 Micrometer, 420 

 Mild steel, 408 

 Milling machine, 433-435 

 Mixtures, chemical^ 126 

 Molding, 375 



board, 386 



branches of, 380 



brass, 381 



dry-sand, 380 



essentials of, 378 



green-sand, 380 



in cores, 388 



iron, 369-383 



loam, 380, 381 



machine, 387 



steps in, 376-378 

 Molecular weight, 130 

 Moment of forces, 27 

 Momentum, 55 

 Morse, Samuel, 220, 222 



alphabet, 223 



numerals, 223 



punctuation, 223 

 Mortar, 160 

 Motion, 



kinds of, 58 



laws of, 54-67 



three laws of, 54 



Motor car, parts of, 362 

 Motor electric (See " Electric 

 motor") 



Nails, 249 

 Natural gas, 118 

 Nernst lamp, 117 

 Neutralize^ electric, 185 

 Nickel, 409, 454 



Oakum, 466 



Ohm, 172 



Ohm's Law, 173 



Open-hearth process, 404-406 



Oxidation, 133 



Oxygen, 133 



Ozone, 133 



Parallelogram of forces, 62 

 Pattern-making problems, 334- 



389 

 Patterns, 



allowance for finish, 385 



match, 385 



match plate, 386 



molding board, 386 



problems in making, 384-389 



shrinkage, allowance for, 384 



shrink rule, 384 

 Pel ton wheel, 76 

 Perspective drawing, 230 

 Perspiration, 356 

 Pewter, 456 

 Physico-chemical processes, 143- 



155 



Physics, 1 

 Pickling, 375 

 Pipes, 



capacity of, /3 



for heating systems, 350 



risers and returns, ^1 



steam engines, 333-335, 336, 



337 



Pitch, 122 

 Planer, 429 



operation of, 429-431 



