The veinlet, VV, shows a very fine grained structure due to metasomatic replacement of country rock by the irregular veins of calcite. Photographer: Unknown
Scope & Content:
Genre: Scientific Photography Photomicrograph, circular image, mounted facing p. 158.
Microsection of Syenitic Rock showing the occurrence of metallic sulphides as original constituents of igneous rocks. Black grains consist of PbS and FeS. Photographer: Unknown
Scope & Content:
Genre: Scientific Photography Photomicrograph, circular image, mounted facing p. 162.
'The pigeon's letter. 'L'International' containing the news of the French victory at Orleans.' Photographer: London Stereoscopic Company
Scope & Content:
Miniature print mounted as a carte de visite, with descriptive letterpress on mount. The photograph is a reduced image (much faded) of the front page of L'International sent by pigeon during the Franco-Prussian War. The overmount, on which is printed descriptive letterpress describing the use of...