ANALYTICAL INDEX. 



MUNCHAUSEN, Baron, his remarkable case of hydrophobia, 1027. 

 MURRAY, Capt. his method of preserving the health of his men in 



hot climates, 807, 808. 

 Music, of the spheres, Pythagorean theory of, 472 ; consecrated 



by the poetry of Job, Shakspeare, Milton, and Goethe, 472, 



note. 



NATIONS, all of one blood, and descended from the same stock, 

 (therefore all brothers) 746 ; longevity of, 761, to 778. 



NATURE, all the operations of, resolvable into motion, 16; the 

 laws of, permanently uniform, 242-43 ; Simplicity of its mecha- 

 nism, 277 ; ignorance of, the principal source of physical and 

 moral evil, 478-79 ; curative powers of, 577, 1066 and 1067 ; 

 laws of inverted, 643 ; the art of God, 674 ; regarded by Hip- 

 pocrates as the animating principle, 1065 ; and as the best 

 physician in disease, 1065; the scource of all true practical 

 knowledge, passim. 



NEGROES, their peculiar organization, 703, 719, 725; changes 

 of colour in, produced by changes of climate, 756 ; short-lived 

 in central Africa, 773 ; but long-lived in the United States, 

 763 ; their colour and whole physical character climatic see 

 supra. 



NEWTON, Sir Isaac, his views of the ^Ether, 4 and 5 ; on its mode 

 of operation, 38 ; maintains that attraction and repulsion are 

 ultimate phenomena, 16, note ; his law of gravity, 34; his first 

 law of motion, 34 ; maintains the vacuum of space, 35 ; on 

 the pores of bodies, 12; on the cause of opacity and transpa- 

 rency, 13, note; his theory of atoms, 46, 159 ; on the cause 

 of refraction and reflection, 86, 195 ; resolves all the pheno- 

 mena of nature into attraction and repulsion, 162; imperfect 

 comprehension of his physical views, 164; refers the centri- 

 fugal force of particles to an inherent repulsive property, 16; 

 and that of planets to the immediate agency of the Deity, 37 ; 

 his excellent axiom, 270 ; his own views of what he had accom- 

 plished, 274; his comprehensive generalizations, 275, 281; 

 on two sethers, 388, note; on the vis inertia of matter, 276, 

 note ; on the cause of animal motion, 492, 586 ; on the mate- 

 riality of the First Cause 503, note ; extensive influence of his 

 views, 502. 



NIAGARA, falls of, 269. 



NITROGEN, its refractive power, 88 ; and probable atomic weight 

 90 ; its expansive force in detonating compounds, 90 ; is ab- 

 sorbed from the atmosphere during respiration, 545, 912. 



NUTRITION, regarded by Cuvier as the greatest mystery of life, 

 661-2; views of Sir Ch. Morgan, 662; rationale of, 666 to 

 672 ; a right knowledge of, a key to the true theory of all dis- 

 eases, 682-83 ; cessation of, the proximate cause of death, 678. 



