lts: The piece of metal is brought to a red heatand suddenly plunged in a mixture composed as fol-lows: Pitch, 2 parts; train oil, 3 parts; tallow, 1part; with a small addition of common salt. Thisoperation is repeated two or three times. TWO NEW OPTICAL ILLUSIONS. All optical illusions which have… … A Question of Steamsblp models. The speed of the steamer Finance, of the UnitedStates and Brazil Steamship Company, which madethe trip from St. Thomas to this city in five days,is owing—according to the statement of one of herofficers to a Tribune reporter—to her model. She is nearly flat on tbe…
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