On Sept. 27th and 28th I find the first suspicions of an inequality depending on 8 × mean longitude of Venus13 × mean longitude of Earth.

The principal part of the calculations remaining at the date of the last Report was that applying to the determination of the geographical longitudes of fundamental stations.

It appeared to me therefore that the repetition of the measure of astronomical longitude between Greenwich and Valencia could be no longer delayed.

The chronometrical longitudes of Liverpool Observatory, Kingstown Station, and Valencia Station are 12m 0.05s, 24m 31.17s, 41m 23.25s; the geodetic longitudes, computed from elements which I published long ago in the Encyclopaedia Metropolitana, are 12m 0.34s, 24m 31.47s, 41m 23.06s.

reference to the re-determination of the longitude of Valencia, it is stated that "The concluded longitude agrees almost exactly with that determined by the transmission of chronometers in 1844; and entitles us to believe that the longitudes of Kingstown and Liverpool, steps in the chronometer conveyance, were determined with equal accuracy.

The chronometrical longitudes of Liverpool Observatory, Kingstown Station, and Valencia Station are 12m 0.05s, 24m 31.17s, 41m 23.25s; the geodetic longitudes, computed from elements which I published long ago in the Encyclopaedia Metropolitana, are 12m 0.34s, 24m 31.47s, 41m 23.06s.

He found no discordance greater than two minutes of arc in Tycho's observed longitudes in opposition, but the latitudes, and also longitudes in other parts of the orbit were much more discordant, and he found to his chagrin that four years' work was practically wasted.

'After much trouble the longitude of Edinburgh had been determined: 'the retard of the current is 0.04s very nearly, and the difference of longitudes 12m 43.05s, subject to personal equations.

From them it will be observed that the results for absolute longitude obtained by the British and American astronomers do not agree.

Had the founders of your country's Independence followed this direction which led the rest of America astray, Cincinnati would be a hamlet yet as it was in Jacob Wetzel's time; and Ohio, instead of being a first-rate star in the constellation of your Republic, would be an appendage of neighbouring Eastern Statesa not yet explored desert, marked in the map of America only by lines of northern latitude and western longitude.

As we shall refer all longitudes during this cruise to Scott's Jetty, Swan River, I may here state that the approximate longitude of that place is considered to be 115 degrees 47 minutes East of Greenwich.)