Unpublished letter, regarding meteorological observations in Australia from Tho [Thomas] Brisbane to Sir H [Humphry] Davy Brisbane writes that he is sending another set of astronomical observations taken in Australia by Brisbane and [Karl Ludwig Christian] Rumker. Brisbane also writes that he sends meteorological observations taken at different stations across Australia. Subject: Astronomy / Meteorology Written by Brisbane in G [Government] House, Parramatta, N S [New South] Wales, [Australia]. 18 April 1823