| RefNo | PP/15/20 |
| Previous numbers | PP/47/21 |
| Level | Item |
| Title | Paper, 'On a second case of the occurrence of silver in volcanic dust, namely, in that thrown out in the eruption of Tunguragua [Tungurahua] in the Andes of Ecuador, January 11th, 1886' by J W [John William] Mallet |
| Date | 1890 |
| Description | Mallet writes: 'In a paper laid before the Royal Society three years ago [see PP/10/1], I gave an account of a specimen of volcanic dust, or so-called ash, from the eruption of Cotopaxi of July 22nd and 23rd, 1885, in which ash silver was found to be present in minute quantity, that being the first instance in which this metal had been detected among the materials ejected from volcanoes. The specimen was sent me by my friend and former pupil Senor Julio R Santos, of Bahia de Caraguez, Ecuador.'
Annotations in pencil and ink.
Subject: Volcanology
Received 7 February 1890. Read 6 March 1890.
A version of this paper was published in volume 47 of the Proceedings of the Royal Society as 'On a second case of the occurrence of silver in volcanic dust, namely, in that thrown out in the eruption of Tunguragua in the Andes of Ecuador, January 11th, 1886'. |
| Extent | 5p |
| Format | Manuscript |
| PhysicalDescription | Ink and graphite pencil on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | DOI: 10.1098/rspl.1889.0091 |
| RelatedRecord | PP/10/1 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA6467 | Mallet; John William (1832 - 1912); chemist and civil engineer | 1832 - 1912 |