Abstract
SO long ago as 1908 Prof. J. W. H. Trail described in the Kew Bulletin a method I which he had worked out for fixing the green colour in plants. By placing the plant for a shorter or longer period in a boiling solution of copper acetate dissolved in acetic acid, a combination of the copper salt with the chlorophyll was formed which rendered the colour permanent when the specimen was exposed to the light after drying or placed in a preservative solution such as alcohol.
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RENDLE, A. Preservation of Natural Colour in Plants . Nature 98, 191–192 (1916). https://doi.org/10.1038/098191a0
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DOI: https://doi.org/10.1038/098191a0