The Influence of the Blue Ray of the Sunlight and of the Blue Colour of the Sky

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Excerpt from The Influence of the Blue Ray of the Sunlight and of the Blue Colour of the Sky: In Developing Animal and Vegetable Life, in Arresting Disease, and in Restoring Health in Acute and Chronic Disorders to Human and Domestic AnimalsIx the previous editions of my memoir On the Influence of the Blue Colour of the Sky in Developing Animal and Vegetable Life, an erroneous impres sion has been created by the ambiguity of the language employed in describing the results of my experiments with light. From the tints re¿ected from the oatside of the coloured glass, upon centain localities in my terraced garden, I fancied that the glass itself was of a violet tint, and so attributed the remarkable results mthin the grapery to violet rays. Upon my attention having been called to tins apparent discrepancy, I investigated the matter, and found that the glass was vi a dark mazarine blue - owing its colour to a preparation of cobalt. Which ha 1 been fused with the materials composing the glass during its manu tucture r 1 that the re¿ection of the violet ray on the outside as due to the irregular ~r.rface of the glass itself upon which the light of the fire rment, as well as or ft. sunlight had fallen, and had been thus re¿ected. Whatever effect may be produced by the use of violet coloured glass is to be attributed to the proportrc Yr f-f the blue ray which enters into the composition of the violet rays of light, and n Jt to those composite rays themselves.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.