General correspondence, letters A-H, on proposals to reform or decimalise the standards of weights and measures. The correspondence takes the form of questionnaires to respected parties and asks opinions on proposed improvements. Those questioned include D.F.J. Arago, A.D. Bache, F.W. Bessel, S.H. Christie, T. Colby, W. Cubitt, A. de Morgan, M. Faraday, J. Field, W.H. Fitton, Sir W.R. Hamilton and T. Henderson. There are also newspaper extracts from 'The London Mercantile Journal and Weekly Dispatch'.