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Blue and red light: or, Light and its rays as medicine; showing that light is the original and sole source of life, as it is the source of all the physical and vital forces in nature; and that light is nature's own and only remedy for disease ... together with a chapter on light in the vegetable kingdom (1877)

Pancoast, S. (Seth), 1823-1889 · Philadelphia, J. M. Stoddart & co · leaf 1

An illustration from Blue and red light: or, Light and its rays as medicine; showing that light is the original and sole source of life, as it is the source of all the physical and vital forces in nature; and that light is nature's own and only remedy for disease ... together with a chapter on light in the vegetable kingdom, 1877, leaf 1
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Light, Colored · Phototherapy

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

More pictures from Blue and red light: or, Light and its rays as medicine; showing that light is the original and sole source of life, as it is the source of all the physical and vital forces in nature; and that light is nature's own and only remedy for disease ... together with a chapter on light in the vegetable kingdom

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