A collodion positive (ambrotype) of a smartly-dressed boy carrying a walking cane, taken by J. Hickling in about 1858. The boy wears a frock-suit, a more formal version of the morning-suit. The collodion positive process (also commonly known as ambrotype) was popular during the 1850s and 1860s. An underexposed collodion negative on glass was backed with a black opaque coating to create a unique positive image.
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