ANALYTICAL INDEX. 



of ancient Scythia, 596 ; of middle and Southern Asia, 597 ; 

 of Europe and the United States in the middle latitudes, 698 ; 

 of northern Europe, 699 ; of the tropical zone, 700-2 ; ex- 

 tremes of, unfavourable to the best developement of man, 704 ; 

 the one most favourable to mankind, 720-1 ; its influence on 

 the laws and creeds of mankind, 727, 888 ; on the colours of 

 mankind, 757 ; on the longevity of nations, 761, 774; on the 

 diseases of the human race, 779. 



CLIMATES, superiority of temperate, 705; tropical, diminish 

 respiration, 710-15; pathological effects of, 803, 819; dimi- 

 nish the nutritive process, 805; produce debility of the stomach, 

 bowels, liver, brain, and muscles, 806 ; how to counteract their 

 influence, 807-8. 



CLOUDS, their height, 297 ; theory of their rapid formation, 

 300-4. 



CLUVERIUS, on the number of Hebrew words found in other 

 languages, 735. 



COAGULATION of the blood, theories of, 646, 661 ; leading facts, 

 647 ; prevented in the living body by continual motion and re- 

 novation, 647 ; experiments of Scudamore, Ancell, and Prater, 

 648, note ; takes place sooner in the blood of birds than of mam- 

 malia, and sooner in the latter than in reptiles and fishes, 648 ; 

 sooner in arterial than in venous blood, 648 ; sooner in strong 

 than weak men, 649 ; retarded by cold, 648 ; experiments of 

 Denis, 649 ; of the Author, 650-1 ; of Marshall, 652 ; of MU1- 

 ler and Magendie, 653 ; retarded by various drugs, 654 ; why 

 slower than usual during pregnancy, 654; why it occurs so 

 soon in the blood of animals exhausted by hemorrhage, or 

 by exercise, 660 ; sooner in health than in disease, 665 ; and 

 still slower during malignant diseases. 



COAL, fossil, its vegetable origin and vast abundance, 80 ; an- 

 thracite, found in mountainous districts, and formed by the 

 volatilization of its hydrogen, nitrogen, and oxygen, by sub- 

 terranean heat, 81. 



COHESION, views of, Sir H. Davy, and Sir J. Herschel, 16, note ; 

 a secondary effect, 17; of liquids, 137, 155; Dr. Baxters 

 theory of, 166, note ; of the Rev. W. Jones, 166 ; of Epicurus, 

 166 ; a modification of universal attraction, 167, 277 ; therefore 

 of gravitation, 267; rationale of, 174, 178; its relation to 

 chemical affinity, 179; argumentum forte, 186; vital, 

 rationale of, 679 ; views of Humboldt and Cuvier, 680, note ; 

 how diminished and destroyed by disease, 681. 



COLD, how produced by evaporation, 141-2 ; fatal effects of, on 

 the horses of Napoleon, 573; its influence on the heart's 

 action, 618, 619 ; on diseases of the lungs, 786, 803 ; how it 

 augments respiration, 715-16; its influence on diseases, and 

 mortality in the French army, 803, note ; how it accelerates 



