. Science-gossip . m, *<• A combiiieil Cinematojjraph and Siiapslmi Camera, Printer, Projector, Reverser and Knlartjer, fitted with Two SPECIAL VOIGTLANDER LENSES. Mil, IlNisiiEi) Polished PRICE £6 Vll Amateurs. ^ JATENTED. THE BIOKAM PROJECTOR, For ProlLctlnff, Revcrslnpr, nnd EnlarifliiK, llttod withOno VOIGTLANDER Wide AngleLENS nnd adapted to screw IntoLens Flansro ol ANY EXISTINGLANTERN.

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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience