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.
Essais des proportions du Viaduc du Chemin de fer, des parapets à jour et des moulures décoratives du Pont. Photographer: Collard, Auguste-Hippolyte
Scope & Content:
Inscription: Blind-embossed on mount: ‘Collard Photographe des Ponts et Chaussées. Atelier Centrale de Photographie. Bould. de Strasbourg, 39.’ Genre: Industrial Photography View of a span of the bridge with wooden framework in place, with a section of the viaduct montaged onto the print to...