... very practical idea," continued Keyork, amused with his own fancies, "and it will yet be carried out. The great cities of the next century will each have a liver of brick and mortar and iron and machinery, a huge mechanical purifier. You smile! Ah, my dear boy, truth and phantasm are very much the same to you! You are too young. How can you be expected to care for the great problem of problems, for the mighty question of ... — The Witch of Prague • F. Marion Crawford
... white, clear flour, and to so increase the yield as to leave some margin for profit. The first step in the solution of this problem was the invention by E. N. La Croix of the machine which has since been called the purifier, which removed the dirt and light impurities from the refuse middlings in the same manner that dust and chaff are removed from wheat by a fanning mill. The middlings thus purified were then reground, and ... — Scientific American Supplement No. 275 • Various
...
