Copy letter from Robert William Frederick Harrison, to Gapal Chandra Del, 39 Lansdawn Road, Bhawanipur, Calcutta, India 'Dear Sir, I am directed to acknowledge the receipt of your letter of August 8, and to say that the President [William Huggins] regrets that the pressure of his work puts it out of his power to enter upon a correspondence upon the subject you refer to. I am, Yours faithfully, T. E. James Clerk R. S. [Royal Society]'. 2 September 1902