On the chromatology of some British sponges / by C.A. MacMunn.
- MacMunn, Charles Alexander, 1852-1911.
- Date:
- [1888]
Licence: Public Domain Mark
Credit: On the chromatology of some British sponges / by C.A. MacMunn. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
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![[From the Journal of Physiology. Vol. IX. No. 1.] ON THE CHROMATOLOGY OF SOME BRITISH SPONGES. By C. A. MAC MUNN, M.A., M.D. (PI. I.) In the Journal of Anatomy and Physiology for November, 1869\ is an abstract by Professor Lankester of a report presented to the British Association at Exeter in 1869 On the Spectroscopic Examina- tion of certain Animal Substances by himself. In that abstract he describes the colouring matter of Spongilla fluviatilis, which he calls chondrichlor, and which for certain reasons he considered not to be identical with leaf green. Sorby on examining it subsequently2 found that it was chlorophyll, as it contained all the essential constituents of chlorophyll, which are soluble in carbon bisulphide, besides a yellow substance soluble in water, very similar to, if not identical with, one met with in many fungi. That some slight differences do exist between spongilla chlorophyll and plant chlorophyll is probable from the results of my own examination, published in the Philosophical Transactions, Part I. 1886, these differences being indicated by its behaviour on saponification. In the abstract by Prof. Lankester above referred to he includes sea-water sponges among those animals whose pigments yield no bands. Prof. Moseley in his paper On the Colouring Matters of various Animals, and especially of Deep-Sea Forms dredged by H.M.S. Challenger3, describes a colouring matter from Poliopogon Amadou (Wyville Thomson) which was bright pinkish purple, soluble in dilute alcohol and fresh water, but gave no bands. Krukenberg has made a great number of observations on sea- water sponges, and his observations have brought to light the existence ( of a number of colouring matters, such as lipochromes, floridines, uranidines, and hepatochromates. He recognised the chlorophylloid nature of the last-named, but missed some of the bands. Otherwise doubtless he would have laid 1 p. 119 et seq. 2 Quart. Journ. Micros. Soc. Vol. xv. N. S. p. 47. 3 Quart. Journ. Micros. Soc. Vol. xvn. N. S. p. 1—23.](https://iiif.wellcomecollection.org/image/b22302980_0005.jp2/full/800%2C/0/default.jpg)
