Correspondence on planetary reductions, including official correspondence with the Government on grants for the reductions and accounts of money paid to computers. There are also reductions of Irish tide observations and accounts and receipts of wages paid out. The correspondents include J. Phillips, J.F.W. Herschel, Viscount Althorp, S.P. Rigaud, T. Spring-Rice, J. Barrow, J.W. Lubbock, F. Beaufort, J. Glaisher and E. Sabine.