may be desired. The building may, therefore, consist of columns two hundred feet high and upwards, of proportionate thickness, and of one entire piece of vitrified substance; huge pieces are to be moulded so as to join and hook on to each other firmly, by proper joints and folds, and not to yield in any way without breaking.
"Foundries, of any description, are to be heated by burning-mirrors, and will require no labor, except the making of the first moulds and the superintendence for gathering the metal and taking the finished articles away."
Alas! in the present state of science, we must take the finished articles away; but think not that man will always be the victim of circumstances.
The countryman who visited the city, and found the streets cluttered with bricks and lumber, reported that it was not yet finished; and one who considers the endless repairs and reforming of our houses might well wonder when they will be done. But why may not the dwellings of men on this earth be built, once for all, of some durable material, some Roman or Etruscan masonry, which will stand, so that time shall only adorn and beautify them? Why may we not finish the outward world for posterity, and leave them leisure to attend to the inner? Surely, all the gross necessities and econ-
