Matthew Flinders,
A Voyage to Terra Australis, Volume 2…
(1814)
“ Variations of rate and errors in longitude, made by one or both of Earnshaw's time keepers, No. 543 and No. 520, during the circumnavigation of Terra Australia, and from Port Jackson to the island Mauritius. Departure taken. Rates of time keepers losing. Variations of rate. Errors in long. on arriving. Daily part ofsupplemental errors. Place. Longit. East No. 543 No. 520. Mean. During the passage. Number of days. Daily acceleration. ”
