| RefNo | PP/7/3 |
| Previous numbers | PP/39/5 |
| Level | File |
| Title | Paper, 'On the microscopic characters of some specimens of devitrified glass, with notes on certain analogous structures in rocks' by Douglas Herman and Frank Rutley |
| Creator | Herman; Douglas (fl 1885) |
| Rutley; Frank (1842-1904); English geologist; petrographer |
| Date | 1885 |
| Description | Herman and Rutley write: 'Devitrification is a process which may either take place naturally or be brought about by artificial means. Instances of the former are familiar to us in once glassy rooks which have passed into a felsitic or micro-crystalline-granular condition. The change which has taken place in the conversion of obsidian into felstone is so great that it would not be possible to infer the original nature of the rock, were it not that certain structural peculiarities, often of a very delicate character are retained.'
Annotations in pencil and ink. Includes 15 pages of figures relating to glass under a microscope.
Subject: Mineralogy / Geology / Crystallography
Received 28 May 1885. Read 18 June 1885. Communicated by Thomas George Bonney.
A version of this paper was published in volume 39 of the Proceedings of the Royal Society as 'On the microscopic characters of some specimens of devitrified glass, with notes on certain analogous structures in rocks'. |
| Extent | 39p |
| Format | Manuscript |
| Drawing |
| PhysicalDescription | Ink and graphite pencil on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | DOI: 10.1098/rspl.1885.0007 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA6474 | Bonney; Thomas George (1833 - 1923); geologist | 1833 - 1923 |