Abstract
The present investigation on the colouring matters of the compound Ascidian Diazona violacea, Sav . (= Syntethys hebridicus , Forbes and Goodsir), had its origin in an observation of Prof. W. A. Herdman while dredging in the neighbourhood of the Outer Hebrides in 1912. Some specimens of this rare Ascidian were collected by Prof. Herdman, which showed whilst alive the green tint described by Forbes and Goodsir, but on placing them in alcohol for purposes of preservation it was found that after a few hours the alcohol had acquired the original green colour of the Ascidian, while the organism itself had changed to violet, a shade nearly complementary to that of the living animal. A description of these specimens has already been published.
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Schedule a callMore From: Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character
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