INDEX. 



7fll 



Melvill, Thomas, on the spectrum, 

 429. 



Membra dividenlia, 68. 



Metals, probable character of new, 

 258 ; transparency, 548 ; classi- 

 fication, 675 ; density, 706. 



Method, indirect, 98 ; of avoidance 

 of error, 340 ; differential, 344 ; 

 correction, 346 ; compensation, 

 350 ; reversal, 354 ; means, 357 ; 

 least squares, 377, 386, 393 ; 

 variations, -139 ; graphical, 492 ; 

 Baconian, 507. 



Meteoric streams, 372. 



Meteoric cycle, 537. 



Metre, 349 ; error of, 314. 



Metric system, 318, 323. 



Michell, speculations, 212 ; on 

 double stars, 247 ; Pleiades, 248 ; 

 torsion balance, 666. 



Middle term undistributed, 64. 



Mill, John Stuart, disjunctive pro- 

 positions, 69 ; induction, 121, 

 594 ; music, 191 ; probability, 

 200-201, 222; supposed reform 

 of logic, 227 ; deductive method, 

 265, 508 ; elimination of chance, 

 385 ; joint method of agreement 

 and difference, 425 ; method of 

 variations, 484 ; on collocations, 

 740 ; erroneous tendency of his 



Shilosophy, 752. 

 ler, Prof. W. H., kilogram, 318. 



Mind, powers of, 4 ; phenomena 

 of, 672. 



Minerals, classification of, 678. 



Minor term, illicit process of, 65. 



Mistakes, 7. 



Modus, iolendo ponens, 77 ; poncndo 

 tollens, 78. 



Molecular movement, or pedesis, 

 406. 



Molecules, number of, 195. 



Momentum, 322, 326. 



Monro, C. J., correction by, 172 ; 

 on Comte, 753. 



Monstrous productions, 657. 



Moon, supposed influence on clouds, 

 410 ; atmosphere of, 434 ; mo- 

 tions, 485 ; fall towards earth, 

 555. 



Morse alphabet, 193. 



Mother of pearl, 419. 



Miiller, Max, on etymology of intel- 

 lect, 5. 



Multiplication in logic, 161. 



Murphy, J. J., on disjunctive 



relation, 71. 



Murray, introduced nse of ice, 343. 

 Muscular susurrus, 298. 

 Music, possible combinations of, 



191 



NAMES, 25 ; of persons, ships, &c., 

 680. 



Nature, 1 ; laws of, 737 ; uniform- 

 ity of, 745. 



Nebular theory, 427. 



Negation, 44. 



Negative arguments, 621. 



Negative density, 642. 



Negative premises, 63, 103. 



Negative propositions, 43. 



Negative results of experiment, 434. 



Negative terms, 14, 45, 54, 74. 



Neil on use of hypothesis, 509. 



Neptune, discovery of, 537, 660. 



Newton, Sir Isaac, binomial theo- 

 rem, 231 ; spectrum, 262, 418, 

 420, 424, 583 ; rings of, 288, 

 470; velocity of sound, 295; 

 wave-lengths, 297 ; use of pen- 

 dulum, 303; on time, 308, 

 definition of matter, 316; pen- 

 dulum experiment, 348, 443, 

 604 ; centrobaric bodies, 365; on 

 weight, 422 ; achromatic lenses, 

 432 ; resistance of space, 435 ; 

 absorption of light, 445 ; pla- 

 netary motions, 249, 457, 463, 

 466, 467 ; infinitesimal calculus, 

 477 ; as an alchemist, 505 ; his 

 knowledge of Bacon's works, 507 ; 

 hypotheses nonfingo, 515 ; on vor- 

 tices, 517 ; theory of colours, 

 518 ; corpuscular theory of light, 

 520 ; fits of easy .reflection, &c., 

 523 ; combustible substances, 

 627 ; gravity, 555, 650; density of 

 earth, 566 ; velocity of sound, 

 571 ; third law of motion, 622 ; 

 his rules of philosophising, 625 ; 

 fluxions, 633 ; theory of sound, 

 636 ; negative density, 642 ; 

 rays of light having sides, 662. 

 Newtonian Method, 581. 

 Nicholson, discovery of electrolysis, 



530. 

 Ninth Bridgewcder Treatise quoiod, 



743, 757. 



Nipher, Professor, on mus.'ular 

 exertion, 490. 



