354 HEALTH. 



must be clad by the walls of a comfortable house, and the hearth 

 fire artificially elongate the brightness which the life fire commences. 

 Only thus can warmth become solid. For it is here as in space and 

 logic : there must be three terms or dimensions; viz., the man in a 

 whole skin, the skin in a decency or wholeness of garments, and 

 the man in a house of comfort, in order to make the substance of 

 a citizen. And again the skin of the circumjacent earth must be 

 washed and dressed, as the double of our own, in order that the 

 reservoirs of outward cleanness may be filled; and lastly, our minds 

 in their skins (pp. 281 — 288) must be clean and whole, lest erup- 

 tions worse than can come from without, should break forth from 

 within. Such is the logic of duties, easier to say than do, which 

 deduces itself by sanitary necessity from the skin. 



The lungs cry aloud for still another public science; and as they 

 provide us with air and motion, they claim circumstances around us 

 convenient for the supply of these two demands. Had we no lungs, 

 or lungs that had not begun to breathe, we might then, so far as 

 these organs are concerned, live like embryos, closely surrounded by 

 walls. But the lungs require both space and atmosphere. These 

 are easily procured as a raw material ; we need only walk abroad to 

 breathe freely enough. Other agencies however intervene ; the 

 fields are cold and the ground is damp, and we need shelter as much 

 as space, and warmth as much as air. Thus the problem arises ; 

 for the world is too big and too windy for our constant lungs. The 

 first size and air which we have to manage is that of the house. 

 For we soon find that we cannot live in nature, but only in art; and 

 are constrained to carry out the lungs in the mansion ; to raise to 

 the second power the air which they contain, and to have an airy 

 room without us, answering to and supplying the air chamber within 

 us. So too with the free motion of the lungs ; it requires to be 

 taken up and continued by a liberality in the dress, and this, by a 

 space in the house, which admits the corresponding free motion of 

 the body. Our apartments must be large enough to enable us to do 

 with our whole frames the duties by which we live, as the body by 

 its chest is large enough for the play of its organs (pp. 100 — 104). 



Nay, but the lungs are bigger missionaries still, and they not 

 only supervise chambers and chimneys, and love ventilation, but 



