INDEX. 



781 



Mehill, Thomas, on the spectinm, 

 429. 



Membra dividenlia, 68. 



iletnls, probable character of new, 

 '2;>% ; 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, -439 ; graphical, 492 ; 

 Baconian, 507. 



Meteoric streams, 372. 



Meteoric cycle, 537. 



Metre, 349 ; error of, 314. 



Metric system, 318. 323. 



Michell, speculation .-<, 212 ; on 

 double stars, 247 ; Pleiades, 248 ; 

 torsion balance, 566. 



Middle term undistrilmted, 64. 



Mill, John Stuart, disjuuctive 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 difl'ercnce, 425 ; method of 

 variations, 484 ; on collocations, 

 740 ; erroneous tendency of his 

 philosojiliy, 752. 



Miller, 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, tolendo ponens, 77 ; ponendo 

 toHevs, 78. 



Molecular movement, or pedcsis, 

 406. 



Molecules number of, 195. 



Momentum, 322, 326. 



Monro, C J., correction b}', 172; 

 on Comtc, 753. 



Monstrous productions, 657. 



Moon, sujiposfd influence on ciuuds, 

 410 ; atmosphere of, 434 ; mo- 

 tions, 485 ; fall towards earth, 

 555. 



Morse alpljabet, 193. 



Mother of pearl, 419. 



Miiller, Max, on etymology ofintol- 

 l.!ct, 5. 



Multiplication in logic, 161. 



Alurjiliy, J. J., on disjunctive 



relation, 71. 

 Murray, introduced use 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 pro])ositions, 43. 



Negative results of experiment, 434. 



Negative terms, 14, 45, 54, 74. 



Neil on use of hypothesis, 509. 



Neptune, discovery of, 637, 660. 



Newton, Sir Isaac, binomial theo- 

 rem, 231 ; spectrum, 262, 418, 

 421), 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 ; ]ila- 

 netary motions, 249, 457, 463, 

 4ti6, 467 ; infinitesimal calculus, 

 477 ; as an alchemist, 505 ; his 

 knowledge of Bacon's works, 5u7 ; 

 hypotheses non finrjo, 515 ; on vor- 

 tices, 517 ; theory of colours, 

 518 ; corpuscular theory of light, 

 520 ; fits of easy reflection, &c., 

 523 ; combustible substances, 

 527 ; gravit)', 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 Brldycwater Treatise quoted, 

 743, 757. 



Nipher, Professor, on muscular 

 exertion, 490. 



