In this way not only the creek, but the Allegheny River, became literally covered with oil. The loss involved in transportation to Pittsburgh was estimated at fully a third of the total quantity, and before the oil boats started it is safe to say that another third was lost by leakage. The oil gathered by the Indians in the early days was bottled in Pittsburgh and sold at high prices as medicine--a dollar for a small vial. It had general reputation as a sure cure for rheumatic tendencies. As it became plentiful and cheap its virtues vanished. What fools we mortals be! The most celebrated wells were upon the Storey farm. Upon these we obtained an option of purchase for forty thousand dollars. We bought them. Mr. Coleman, ever ready at suggestion, proposed to make a lake of oil by excavating a pool sufficient to hold a hundred thousand barrels (the waste to be made good every day by running streams of oil into it), and to hold it for the not far distant day when, as we then expected, the oil supply would cease. This was promptly acted upon, but after losing many thousands of barrels waiting for the expected day (which has not yet arrived) we abandoned the reserve. Coleman predicted that when the supply stopped, oil would bring ten dollars a barrel and therefore we would have a million dollars worth in the lake. We did not think then of Nature's storehouse below which still keeps on yielding many thousands of barrels per day without apparent exhaustion. This forty-thousand-dollar investment proved for us the best of all so far. The revenues from it came at the most opportune time.[28] The building of the new mill in Pittsburgh required not only all the capital we could gather, but the use of our credit, which I consider, looking backward, was remarkably good for young men. [Footnote 28: The wells on the Storey farm paid in one year a million dollars in cash and dividends, and the farm itself eventually became worth, on a stock basis, five million dollars.] Having become interested in this oil venture, I made several excursions to the district and also, in 1864, to an oil field in Ohio where a great well had been struck which yielded a peculiar quality of oil well fitted for lubricating purposes. My journey thither with Mr. Coleman and Mr. David Ritchie was one of the strangest experiences I ever had. We left the railway line some hundreds of miles from Pittsburgh and plunged through a sparsely inhabited district to the waters of Duck Creek to see the monster well. We bought it before leaving.