Diagrams show apparent motions of sun and Venus with respect to locations in Antarctic Ocean, Antarctica, southeastern Australia, and southern Africa. Elevation of the sun shown along vertical axes. Factors of parallax plotted on diagrams in concentric circles. Longitude shown in hours east. Locations of suggested stations for astronomical observation along Antarctic coast are shown. From: Journal of the Royal Geographical Society of London. Vol. 39 (1869), pp. 91-5; held in Firestone Library. Call number: G7 .J687 v.39 1869.