636 iND 



Machines, application of electro-mag- 

 netism to the movement of, 503. 



Magnet, laws according to which it acts 

 on a spiral, 608 ; electromotive power 

 of, 610. 



— , (Antinori and Biot), on the elec- 

 trical phaenomena produced by, 608, 

 621. 



Magnetic power produced by voltaic ap- 

 paratus, .511. 



Magnetism, active force produced by, 

 503 ; application of, as a moving power, 

 547 ; mechanical effect of, 507. 



Magnets, electro-, lifting power of, 503. 



Mammalia, intestinal worms in the foetus 

 of, 558. 



Materialists, Carns's representation of 

 their views respectins^ life, 252. 



Mathematical theory of heat, 122. 



Matter, constitution of, 4 90; elementary 

 particles of, 490. 



• , organic, origin ot", 555, 



Meadow-sweet, essential oil of, J 53. 



Melloni on the transmission of radiant 

 heat, I. 



, on the polarization of heat, 325. 



i , on the reflection of radiant heat, 



383. 



— , on the identity of the agents pro- 

 ducing light and heat, 388. 



Melolontha of Aristophanes, Aristotle, 

 and Pliny, 193, 195. 



Mercury, oxydization of, 509. 



Metal, vibrations of the laminae of, 139. 



Metallic colours, 105. 



oxides, crystallization of, 414 j 



formation of, 420. 



Metal lochroniy, 95. 



Metals, action of fire on, 108; new me- 

 tliod of colouring, 94. 



• , classification of,according to their 



electrical properties, 621 ; experiments 

 of Lenz on, 62 1 , 622 ; Faraday on, 623. 



Metamorphosis of destroyed organic sub- 

 stances into elementary forms of life, 

 5G0. 



Micheli's experiments on the germination 

 of the seeds of fungi and mould, 556. 



Microglena monadina, eyes of, 574. 



■ volvocina, fiery ring round, 575. 



Microscope, Amici's, 570, 580, 581 ; Che- 

 valier's, 561, 580; Pistor and Schick's, 

 581 ; Hoffmann's, 560; Bleuler's, 560; 

 Plosl's, 571. 



Microscopes, ultimate power of, 576. 



Milne Edwards, organic atoms, 571. 



Mind, analogy between the laws of, and 

 the phidenomena of nature, 223. 



Mitscherlich on the dilation of crystals, 33. 



Mole cricket, devastation caused by, 199. 



Molecules, active, Brown on, 570. 



,gradual origin of organic beings 



from, 562. 



, material, figure of, 459; den- 

 sity of, 463. 



, organic, Ehrenberg on, 555 , \ 



proximate finity of, 575; organic, per- 

 fect organization of, 557. 



Moll, van, experiments on electricity, 534. ! 



Monas Termo, size of, 573; coloured in- 

 ternal sacs of, 573. 



jmlvisculus, motion of, not effected 



by a change of gravity, 559 ; cilia of, 

 559 ; fringe of cilia of, 573 ; membra- 

 naceous sacs, 574. 



Monas atonius, experiments on, 575. 



Mossotti on the forces which regulate the 

 internal constitution of bodies, 44 8. 



Motion, molecular, influence of, 526. 



Motion of heat, 125; in the interior of 

 the earth, 134. 



Mould, cyclical development of, 557 ; 

 experiments of Ehrenberg on, 555 ; 

 germination of the seed?, of, 556. 



Munke's microscopical observations, 571. 



Nature, division of, 228; kingdoms of, 

 Dr. Carus on, 565. 



, represented by Carus as one in- 

 finite life, in which no proper death is 

 conceivable, but merely the merging of 

 a single form in the universal life, 225. 



Naviculae, description of, 401. 



Newton's elementary particles of colours, 

 569, 580; experiments on colours, 99. 



Nitric acid, mode of ascertaining the pre- 

 sence of, 441. 



Nobili's chromatic scale, 120. 



theory of electro-dynamic indue- 



tion, 528; double needle, 608, 609; 

 method of exciting the electric cur- 

 rent, 609. 



Oersted's discovery, 503, 504. 



Ohm on [the galvanic battery, 312; his 

 galvanic chain, 511. 



Organic life, its connection with inorganic, 

 232. 



Organisms, or organic bodies, 226 ; how 

 distinguished from inorganic, 227, 24 2. 



Organized matter, its production from 

 unorganized, 2'! 6, 233. 



Oscillations, Hiot's experiments on, 513. 



Oscillatory beings, between animal and 

 plant, 232, 246. 



O.^seous system, development of, 249. 



Ostrogradsky on the equilibrium of in- 

 compressible fluids, 548. 



OxychJoride, double, analysis of, 431. 



Oxides, metallic, crystallization of, 414. 



Pander's experiments on circulation in 

 the egg, 251. 



