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9. Report of surveys across the continent, in 1867-'68, on the thirty-fifth and thirty-second parallels, for a route extending the Kansas Pacific Railway to the Pacific Ocean at San Francisco and San Diego.

10. Explorations of the highlands of the Brazil; with a full account of the gold and diamond mines. Also, canoeing down 1500 miles of the great river São Francisco, from Sabará to the sea.