Electrical observations at Flagstaff Observatory, Australia, by George Balthazar von Neumayer Hourly measurements of atmospheric electricity made at Flagstaff Hill Observatory, Melbourne, Victoria. Arranged by day, with columns for mean time, observation I-III mean of north and south, 1/2 (I+III) =A, 1/2 (II+A)=M, I-III=△, M+△ = true tension, quality, state of zenith, ozone, and general remarks. Inscribed on front end paper: 'Presented to the Library of the Royal Society London'. The flyleaf is inscribed 'Melbourne Observations' and signed by G B von Neumayer. Volume no.9 in Neumayer's original presentation listing of December 1869. 1 January-30 December 1860