Copy letter from Robert William Frederick Harrison, to The Secretary, Society for the Promotion of Roman Studies, 19 Bloomsbury Square, W.C. A note of 4 July at 4.30 has been made for their meeting. The Royal Society possess an epidiascope by Carl Zeiss, but as this is rather a complicated machine, it would be preferred if they could hire an operator from Zeiss, or arrange with one of the staff here, who usually works the lantern, to assist at the lecture. 4 June 1913