Drummond light

A dissolving lantern light method, it was a 19th century method which enabled the operator to blend one picture into the next without interruption. Sometimes the effects could be quite disconcerting. Of a Drummond Light show arranged in 1851 in New Bedford, Massachusetts by Albert Bierstadt, a newspaper reporter wrote: "The dissolving of one picture into another sometimes develops the most grotesque conjunction of objects. A lady daintily tripping over dry ground is suddenly plunged to the ankles in a brawling stream; or a man sitting securely upon a prostrate log is transferred to the back of an ox." (17) Source: Gordon Henricks, "Albert Bierstadt"