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Synopsis
On The Influence Of The Blue Color Of The Sky In Developing Animal And Vegetable Life by Augustus James Pleasonton. This memoir, read before the Philadelphia Society for Promoting Agriculture in May 1871, presents Pleasonton's long-running experiments suggesting that blue light from the sky, used in combination with violet glass, can stimulate plant growth and accelerate animal development. The text recounts the construction of a violet-and-blue-windowed grapery in 1861, its remarkable grape yields—hundreds and even thousands of pounds of fruit in the second year, and ongoing crops for years—alongside observations from horticulturists. It then describes livestock experiments begun in 1869, where pigs housed under violet glass showed divergent growth patterns, and a Alderney calf born under violet light grew rapidly; these observations are used to argue for a broader influence of blue-violet radiation on physiology. Pleasonton traces theoretical foundations in electricity, magnetism, and solar light, linking the blue and violet rays to plant respiration, oxygen production, and growth, and urges further experiments and practical adoption in agriculture and medicine.
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On the Influence of the Blue Color of the Sky in Developing Animal and Vegetable Life
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On the Influence of the Blue Color of the Sky in Developing Animal and Vegetable Life
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HardPress Ltd, 2021
ISBN 10: 0461482304
ISBN 13: 9780461482300
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On the Influence of the Blue Color of the Sky in Developing
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