2 Human Physiology. 



the latter being a comparison of the organs and functions of 

 various forms of life. 



In this work I propose to consider, first, the actual condition 

 of Man, and of Humanity; to say something of man's origin 

 and place in nature ; of his relations to the material world ; and 

 then to give such an account of his organs and their functions, 

 in every part of his being, as may enable the reader to under- 

 stand his nature its capacities for use and enjoyment, and the 

 causes of the evils of life and their remedies. The nature of 

 man must reveal the law of his life. 



As I have said in the Prospectus to this work : 



"The Law of Life for Man, as for all living things, is written 

 in his organisation. 



"The Constitution of Man; his Physiology, including his 

 Psychology; his relations and adaptations to nature; his 

 instincts, passions, sentiments, and intellectual faculties show 

 us his origin, his natural condition, and his destiny. 



" In the physical and mental organisation of man we have a 

 guide to the conditions of health, the causes of disease, and 

 the best methods of prevention and cure. Human Physiology 

 contains, therefore, the whole ground work of Sanitary Science. 



"We must also look into the nature of man fora true system 

 of Education, the foundation of Morality, a rational system of 

 Politics, the principles of Political Economy, and the laws of 

 Industry, Art, and Society. 



"The Science of Physiology, profoundly and comprehen- 

 sively considered, shows us man's place in nature and his 

 relations to his fellow-men, and gives us the clearest view we 

 can have of his powers, duties, and responsibilities, his 

 ca'pacities, attractions, and possibilities of happiness ; and also, 

 in harmony with Divine Revelation, gives us the evidence and 

 assurance of a continuous existence, or conscious immortality. 



" Human Physiology is, therefore, for us, the science of 

 sciences, displaying the mind of God as written in the most 



