ANALYTICAL INDEX. 



perfectly black, 747, 748 ; where of a dark brown colour, 

 749 ; everywhere painted by the sun, 750 ; complexion of, 

 752 ; Prichard, Lawrence, and Caldwell say not, 754. 



MARCET, Dr. on the chyle of herbivorous and carnivorous animals, 

 543. 



MARSHALL, John, his analysis of blood, 631, 633, 643 ; experi- 

 ments on the heart's action. 



MATHEMATICS, their legitimate object, 275. 



MATERIA Vitae, John Hunter's theory of, 500. 



MATTER, whatever operates upon the senses, 7, note ; existence 

 of, denied by Berkeley, 8, note ; two descriptions of, 15, 109, 

 160, 482 ; organic, chemical elements of, 514. 



MAYO, Mr. on animal heat, 535 ; on sensitive and motor nerves, 

 609. 



MEDICINE, in what it must consist when perfect, 860 ; modus 

 operandi of, 965, 966, 974, 981 ; the whole theory of, must be 

 founded on a knowledge of the vital principle, 1076. 



MENZEL, on the great importance of animal magnetism, 963. 



MENANDER, on sleep, 940. 



MERCURY, theory of its operation, 978, 980 ; its utility overrated 

 in the treatment of inflammations, 1097. 



MESMERISM, theory of, 963, note. 



MEXICANS, had pictorial representations of the horse before that 

 animal was known in America, 745 ; were ignorant of letters 

 and the use of iron, 745. 



MICHAELIS, on the chemical composition of arterial and venous 

 blood, 544, 900. 



MILK, composition of, 926. 



MILTON, on changes in the inclination of the earth's axis, 28 ; 

 on planetary motion, 45 ; on the music of the spheres, 472. 



MIND, its influence on health, 952 ; how the passions of, modify 

 respiration, circulation, and digestion, 953, 954 ; rationale of, 

 956, 957 ; fatal effects of over exertion, 957, 979 ; impelled 

 on by the ardour of discovery, 959 ; views of Madame De 

 Stael, 959 ; despondency of, predisposes to attacks of epi- 

 demics, 961 ; powerful emotions of, induce trance in feeble 

 constitutions, 961. 



MITSCHERLICH, on the specific gravity of carbon vapour, 57 ; on 

 isomorphism, 93 ; on the influence of heat in modifying the 

 crystalline form of bodies, 96 ; on the specific gravity of dif- 

 ferent vapours, 67 ; of sulphur vapour, 119. 



MIXTURES, freezing, theory of, 238. 



MOLECH, an ancient name of the sun, or solar fire, 461. 



MOORE, Thomas, on the blinding influence of prejudice and 

 custom, 625. 



MORE, Dr, Henry, on the spirit of matter, 491, note. 



