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Rh 18. (iii.) Food, medicine, and articles of luxury. Under this head we shall have to examine the possible methods of obtaining pure food in such security and equality of supply as to avoid both waste and famine: then the economy of medicine and just range of sanitary law: finally the economy of luxury, partly an æsthetic and partly an ethical question.

19. (iv.) Books. The value of these consists, First, in their power of preserving and communicating the knowledge of facts.

Secondly, in their power of exciting vital or noble emotion and intellectual action. They have also their corresponding negative powers of disguising and effacing the memory of facts, and killing the noble emotions, or exciting base ones. Under these two heads we have to consider the economical and educational value, positive and negative, of literature;—the means of producing and educating