Copy letter from Herbert Rix, to Messrs Bolas & Company, 11 Ludgate Hill, E.C. Encloses proofs of plates 4 and 6, and the original of plate 6, for [David] Ferrier and [William Aldren] Turner's paper, for which revises are needed for plate 4 figure 3, and plate 6 figure 5, neither of which are noted as satisfactory. The remainder will be returned with headlines written to go to press. With regard to plate 6 figure 5, the authors believe that with the positive they supplied the corrections can be made, but that with plate 4 figure 3, they believe they must supply a fresh negative, and work should not be begun on this until they have received this. 30 July 1894