776 INFLUENCE OF MODES OF LIVING, AND 



emigrate annually to other countries ; for accord- 

 ing to Professor Rau, it doubles every 28-6 years ; 

 in England, every 42*3 years ; in Spain, every 

 41-9 years; in Prussia on the Rhine, every 

 52-33 years; in Austria, every 53-6 years; in 

 France, every 110-3 years; in Sweden, every 

 118; and according to M. Ch. Dupin, every 66 

 years in Russia. (Quetelet, Op. Cit. p. 51.) 



It may be received as a fundamental axiom, that 

 whatever is most delightful to the unperverted in- 

 stincts of mankind, is most favourable to health, 

 beauty, longevity, the developement of all the 

 higher faculties, and the perfection of human na- 

 ture, such for example, as a medium tempera- 

 ture, pure air and water, simple but nourishing 

 food, moderate exercise of the physical, intellec- 

 tual, and moral faculties, especially of the domes- 

 tic and social affections, and tranquillity of mind, 

 which is the fruit of a well spent life.* Nor is it 

 less certain, that whatever excites painful or dis- 

 agreeable sensations, is detrimental to sound 



will advance in literature, science, and the arts, with a rapidity 

 proportioned to the physical superiority of its inhabitants. From 

 all the foregoing facts and observations, it is evident that the cli- 

 mate of Europe is superior to that of all the other quarters of the 

 Globe, and that of the United States next, if we except New 

 Zealand and a few other small islands. 



* But it is stated by Sir John Sinclair in his Code of Health, 

 that after many years of research, he had not been able to find 

 one case of an habitually wicked man who had arrived at a great 

 age. The truth is, that the natural tendency to crime is in itself 

 a fatal disease, and should be treated as such. 



