| Description | 'Metal & Rolling Trade.' (This item is a small hardback notebook with a green cover. On the cover is written the preceding inscription. The notebook contains observations, experiments and calculations relating to the Metal and Rolling trade. Pages of notes have headings such as; 'Operations for cold rolling copper' and 'Prices for Rolling.' Enclosed in the notebook is a sheet of calculations that is docketed; 'A rough calculation of profits of Rolling Mill, supposing the rolling to be charged five and a half times more than the wages paid.') |