ANALYTICAL INDEX. 



size of, a measure of vital energy, 572, 578 ; developed by ex- 

 ercise, 573; and by cold climates, 713, note ; imperfect in 

 reptiles, fishes, and testacea, 578, 580; distributed throughout 

 the whole body of the more active insects, 580; diminished in 

 size by a high temperature, 715, 782 ; diseases of, more preva- 

 lent in cold than hot climates, 780, 782 ; in winter than sum- 

 mer, 786, 787 ; rationale of, 791 to 803. 



LYELL, Mr. his account of earthquakes in Chili, 21 ; on the hot 

 springs of San Filippo, 229 ; refers their solvent power to 

 carbonic acid, 229 ; refers all the past revolutions of the globe 

 to existing causes, 243 ; rejects the doctrine of a central fire, 

 409; on the number of volcanic eruptions per century, 410; 

 refers the great climatic changes which the earth has undergone 

 to geological causes, 413, 414. 



LYONET, on the number of muscles of the cossus, 583. 



MACARTNEY, Dr. on the thermotic treatment of inflammation, 

 1094, 1097, note. 



MAC CORMACK, Dr. on typhus fever in Ireland, 1061. 



MACROBIUS, on the origin of the Greek word for life, 736 ; his 

 views of the Deity, 742. 



M'CuLLOCH, Dr. regards medicine as a principal cause of disease, 

 983, note. 



M'GRJGOR, Mr. on the state of respiration during fever, 1046. 



MADDEN, on the longevity of the learned and liberal professions, 

 777. 



MADEIRA, mean temperature of, 789. 



MAGENDIE, refers muscular motion to the nervous system, 593 ; 

 his vivisection of the brain of a hedge-hog, 599, note ; his ex- 

 periments on sensitive and motor nerves, 609 ; on coagulation 

 of the blood, 646, 653; on the modus operandi of medicines 

 on the blood, 653, 980 ; his very important experiments on the 

 blood, 653, 654, note ; his experiments on non-nitrogenized 

 foods, 924 ; on the modus operandi of the upas tieuti, 968 ; of 

 tartar emetic, 974. 



MAGNUS, on the gases found in arterial and venous blood, 

 547. 



MALARIA, a profound mystery, 820 ; must be something capable 

 of analysis, 821 ; modus operandi of all bad airs, 821 ; gene- 

 rated in all seasons in confined places, 821, 822; composed 

 chiefly of carbonic acid, 824, 825. 



MAMMALIA, temperatures of, 565, 567. 



MAN, stature of in different climates, 719, 724; size of the head 

 among different nations, 724, 725 ; Mandans of North America, 

 their tradition of a deluge, and of a Messiah, 743 ; their views 

 of the Great Spirit, 743 ; primitive colour of, 747 ; where 



