A contribution to the study of intestinal sand with notes on a case in which it was passed / by Sir Dyce Duckworth and Archibald E. Garrod.

  • Duckworth Dyce, Sir, 1840-1928.
Date:
1902
Catalogue details

Licence: In copyright

Credit: A contribution to the study of intestinal sand with notes on a case in which it was passed / by Sir Dyce Duckworth and Archibald E. Garrod. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    Water . 12*40 Organic material . . . 26*29 Inorganic material . . . 61*31 100*00 The inorganic residue left after combustion over a Bunsen's burner had a bluish-white tint, and contained only a fevr dark particles. With the exception of such particles, it was completely soluble in hydrochloric acid. This residue was submitted to analysis, and was found to have the following composition : • • Calcium oxide (CaO) . . . 54*98 Phosphorus pentoxide (P305) . . 42*35 Carbon dioxide (C03) . . . 2*20 a Residue, containing traces of magne- sium and iron .... 0*47 100*00 ' * i The presence of magnesium was beyond doubt, but the quantity was extremely small. Calcium phosphate was clearly the chief mineral constituent. The pigmentation of the sand proved to be somewhat complex, and the small remainder of the material avail- able did not permit of a complete and satisfactory inves- tigation from this point of view. When some of the material was treated with acetic acid a scanty evolution of carbon dioxide was observed, and the gas rose to the surface in a stream of minute bubbles. The solution had the colour of brown sherry, and when filtered from the organic debris and shaken with ether, it imparted to the ether a delicate pink tint, whereas the subjacent liquid remained of a rich yellow colour. The extraction was repeated several times, and the collected ethereal extracts were next shaken with a small quantity of distilled water, whereupon the pigment left the ether and imparted to the water a rich pink