Copy letter from Robert William Frederick Harrison, to Professor Hugh Longbourne Callendar, Fellow of the Royal Society, 62 Hutchinson Street, Montreal, Canada Adverting to Callendar's note of the 2 August, enclosing a subscription for which a receipt has already been sent, Harrison will be much obliged if Callendar can arrange in future to send in the annual fee in some other form as the bankers treat a cheque in dollars as a foreign bill. Suggests a Post Office order if Callendar does not have an agent in England. 21 September 1896