Copy letter from Herbert Rix, to Michael Rogers Oldfield Thomas, British Museum Natural History, S.W. Mr Berjean's estimate is accepted on the understanding that the stone is supplied and the printing and writing done as usual by the Royal Society's own lithographers Messes West, Newman & Company, 54 Hatton Garden, E.C.. Rix has written to Berjean and sends Thomas herewith the sketch-plate. 3 February 1890