... it was found that the Klondike gold was not as pure as that of California, there being combined with it a greater amount of iron, lead, etc. On July 17 of the same year a second steamer arrived at San Francisco , bringing sixty-eight miners, with $1,250,000 worth of gold. Immediately the Klondike fever became general, and so large was the number of gold-seekers that the capacity of all the steamers runnin...