Copy letter from Robert William Frederick Harrison to C G Thorp, MB, 182 St George's Terrace, Perth, Western Australia 'Dear Sir, Referring to your letter of July 4th, the column "The eruption of Krakaton", was published separately and not in the Society's [Philosophical] Transactions. It is still on sale at thirty shillings, and you might obtain a copy on remitting this sum to Messrs Harrison & Sons, 45 St Martin's Lane, London, WC.' 6 July 1910