| Description | 'Adverting to your letter of the 31st ultimo, our printers inform us that they have no in their possession the original block of the figure (I) of Plate 4 on page 276 of the Proceedings of the Royal Society, Vol 87A, illustrating Professor McLennan's paper, and they suggest however that you communicate with Messrs Waterlow & Sons who executed these plates and quote my previous letter giving Dr Houstoun permission to reproduce them.' |