Glass plate negative - Young's Patent Improved Retort
code: LVSAV1990.090
Collection code:
LVSAV1990.090
Collection:
Description
Glass plate negative of technical drawing Young's patent improved retort showing transverse and longitudinal sections of a retort fitted with teethed mechanical rollers to discharge the spent shale, scale 1/2" = 1 foot, c. 1885.
Box labelled "Wax Plant"
One of a series of lantern slides / glass plate negatives, thought to be used by Scottish Oils Ltd for instructional lectures