Copy letter from Theodore E James, to the Editor of 'The Photogram', 6 Farringdon Avenue, E.C. In reply to the Editor's letter of 8 September, it is contrary to practice to lend the actual blocks illustrating papers read before the Scoiety, but cliches of them can be supplied at a small cost, and James is instructing the printers, Messrs Harrison & Sons, to pursue this course with reference to figures two and four of Professor Wood's paper on the 'Photography of Sound Waves'. 10 September 1900