satisfied that petroleum was useful only as a medicine. He was interested in it as a lubricator and a luminant. That petroleum had the qualities of both had been discovered at more than one point before 1850. More than one mill-owner in the districts where petroleum had been found was using it in a crude way for oiling his machines or lighting his works, but though the qualities of both lubricator and luminant were present, the impurities of the natural oil were too great to make its use general. Mr. Kier seems to have been the first man to have attempted to secure an expert opinion as to the possibility of refining it. In 1849 he sent a bottle of oil to a chemist in Philadelphia, who advised him to try distilling it and burning it in a lamp. Mr. Kier followed the advice, and a five-barrel still which he used in the fifties for refining petroleum is still to be seen in Pittsburg. His trade in the oil he produced at his little refinery was not entirely local, for in 1858 we find him agreeing to sell to Joseph Coffin of New York at 62½ cents a gallon 100 barrels of "carbon oil that will burn in the ordinary coal-oil lamp."
Although Mr. Kier seems to have done a good business in rock-oil, neither he nor any one else up to this point had thought it worth while to seek petroleum for its own sake. They had all simply sought to utilise what rose before their eyes on springs and streams or came to them mixed with the salt-water for which they drilled. In 1854, however, a man was found who took rock-oil more seriously. This man was George H Bissell, a graduate of Dartmouth College, who, worn out by an experience of ten years in the South as a journalist and teacher, had come North for a change. At his old college the latest curiosity of the laboratory was shown him—the bottle of rock-oil—and the professor contended that it was as good, or better, than coal for making illuminating! oil. Bissell inquired into its origin, and was told that it came
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