Indian toxicology / by F.N. Windsor.

  • Windsor, F. N.
Date:
1906
Catalogue details

Licence: In copyright

Credit: Indian toxicology / by F.N. Windsor. Source: Wellcome Collection.

    27/116 page 15
    diagram shows a simple and convenient method of doing this. Madras Laboratory Method of Attaching Copper to Rod. If after quarter of an hour’s boiling the copper remains clean and bright, then the re-agents may be declared arsenic or antimony free. This precaution should never be omitted. The fragments of solid viscera should now be introduced and stirred up with the hot acid. A positive reaction is shown by the copper surface becoming grey or black if Arsenic, Antimony or Bismuth, and silvery if Mercury is present. This may occur in a few minutes or be delayed for an hour or more, but will not be complete until the spirit is dispersed. The dis- coloured slip must be washed under a gentle stream of water, detached from the rod and dried by pressing between folds of blotting paper ; then it can be folded to occupy a small compass, dropped into a dry warm test- tube and heated as before described on page 12. '
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