Copy letter from Herbert Rix, to Mr G Pearson, 3 Bolt Court, Fleet Street, E.C. 'Herewith 11 diagrams and four sheets of curves to illustrate a "Phil. Trans" ['Philosophical Transactions of the Royal Society'] paper by Messrs LEAKE, LEVENTHORPE & WHITEHEAD. Please let us have estimate for their reproduction by process. The size of the "Phil. Trans." page is 8 1/2 by 6 in. [inches], and the curves must, therefore, come within that compass. Kindly return the illustrations accompanied by your estimate not later than Tuesday evening next'. 23 January 1896