Page:Narrative of a survey of the intertropical and western coasts of Australia, Volume 2.djvu/429

 �404 APPENmX. SF_,COlq IX, UPON THE GEOGRAPHICAL POSITIONS O1 THE FIXED POINTS OF THE SUllVE. ' ' A. Tns observations for determining the longitudes of the ye- Sact. IX. rious parts of the coast were taken with a circle and a sextant by Troughton: besides these valuable instruments we had three chronometers of Arnold's make, tz., 413 (box), 204 (pocket and 394 (pocket); of which the two first were supplied by the Admiralty. At the end of the fourth year, in consequence of 394 having stopped, a fourth chro- nometer, made by Parlrinson and Frodsham (No. 287 box), was purchased in the colony, and proved to be a most excel- lent watch. The situations of the following places, which were either fixed by us, or adapted from other authorities, served as the basis of the chronometrical determination oi  the 1oligi- tudee of the intermediate parts. The flag-staf of PORT MAC(UARIE, on the north-east head ot Sydney Cove in PORT. JACKSON, (the Cattle Point of Flinders, and otherwise Bennilong Point,) is is latitude 33 � 28 # S., and longitude 151 � 26 E., being, tccording to the ensuing table, the mean of all the observao tions that have been taken.

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