Unpublished letter, regarding observations at Australian Observatory from Tho [Thomas] Brisbane to Sir Humphry Davy Brisbane writes that he is sending the first observations from the Australian Observatory taken by Mr [Karl Ludwig Christian] Rumker to the Royal Society. He writes that he will send any further relevant observations to the Royal Society. Subject: Astronomy / Meteorology Written by Brisbane in Government House, Parramatta, N S [New South] Wales, [Australia]. 6 September 1822