INDEX. 



453 



Numbers refer to Paragraphs. 



Endless screw, 210. 



Energy a constant quantity, 160. 



u and electricity, 372. 



44 Conservation of, 675. 



" Convertibility of, 159, 516, 517. 



" Correlation of, 562, 676. 



' l defined, 151. 



u Formula for, 157. 



u Indestructibility of, 162. 



" Types of, 158. 



" Varieties of, 674. 

 Engine, The steam, 570. 

 English measures, 23. 

 Equilibrant, 86. 

 Equilibrium; 110-113. 

 Equilibrium of liquids, 233. 

 Erg defined, 154. 

 Evaporation, 499, 500. 

 Expansibility defined, 44. 

 Expansion by heat, 483-492. 

 Extension defined, 22. 

 Eye, The human, 657. 



Fahrenheit's hydrometer, 251. 



44 thermometer, 480. 



Falling bodies, 119. 



u " Laws of, 129. 

 False balance, 176. 

 Fife, 471. 



Floating bodies, 240. 

 Flow of liquids, 254-259. 

 Fluid defined, 60, 61. 



" displaced by immersed solid, 237 

 Flute, 471. 

 Fly-wheel, 574. 

 Focus of heat, 555, 556. 



light, 599, 601-603, 624-626. 

 Focus of sound, 439. 

 Foot-pound defined, 153. 

 Force, Absolute unit of, 68. 

 44 Constant, 118. 

 44 Centrifugal, 74. 

 u defined, 64. 



Electric, 325. 

 44 Elements of a, 65. 

 Gravity unit of, 67. 

 44 Kinetic unit of, 68. 

 44 Measurement of, 66. 



of gravity resolved, 199. 

 44 pump, 297. 

 Forces, Composition of, 80. 



Forces, Graphic representation of, 81. 



44 Moments of, 171. 



" Parallelogram of, 82. 



" Parallelopiped of, 90. 



44 Polygon of, 89. 



" Resolution of, 91. 



44 Triangle of, 87. 

 Forms of attraction, 7. 



44 motion, 8. 



Formulas, Mathematical, App. A. 

 Fraunhofer's lines, 638. 

 Freezing mixtures, 521. 



44 point, 478. 

 Friction, 212-214. 



41 develops heat, 564. 

 Fundamental tones, 460, 461. 



G 



Galileo, 121, 660. 

 Galvanic battery, 379-385. 



" electricity, 373. 

 Galvanometer, 391. 

 Gas defined, 58. 

 Gases, Specific gravity of, 248. 

 44 Tension of, 269, 282-287, 494. 

 44 Type of, 270. 

 Geissler's tubes, 371 (31). 

 Governor, 574. 



Graduation of thermometers, 477. 

 Gram defined, 36. 



Graphic representation of forces, 81. 

 Gravitation defined, 98. 

 Gravitation, Laws of, 100. 

 Gravity, Centre of, 107-110. 



44 defined, 102. 



44 Force of, resolved, 199. 



44 Increment of, 127. 



* 4 Specific, 241-253. 

 Gravity unit of force, 67. 

 Grove's battery, 384. 



II 



Hardness, 47. 

 Head of liquid, 254. 

 Heating powers, 569. 

 Heat, Conduction of, 538. 



44 Convection of, 541. 



* defined, 473. 



44 Diffusion of, 537. 



44 from friction, 564. 



44 from percussion, 563. 



44 Latent, 518-530. 



44 Radiation of, 542, 545. 



