Letter from S W Carruthers, 44 Central Hill, Norwood, to the Royal Society 'My dear Sir, I beg to acknowledge on behalf of myself and my mother, and to thank you for the expression of your sympathy in the loss of my fathe [William Carruthers]. The fact htat [sic] but few of the Fellows can remember him in the vigour of his scientific career makes one appreciate all the more the kindly thought. I am, Yours faithfully, S W Carruthers'. 24 June 1922