An Observation of the Eclipse of the Moon, by Arthur Dobs, Esq; At Castle-Dobbs Near Carrickfergus in Ireland, Feb. the 2d, 1728-9; Communicated by Oliver St. John, Esq; F.R.S.

III. An Observation of the Eclipse of the Moon, by Arthur Dobs', Esq; at Castle-Dobbs near Carrickfergus in Ireland, Feb. the 2d, 1728-9; communicated by Oliver St. John, Esq; F.R.S. Castle-Dobbs, Feb. the 8th, 1728-9. Dear SIR, Having had a fine Observation of the Eclipse of the Moon which happened last Sunday Evening, I have sent you it to communicate to the Royal Society, to ascertain our Longitude here, and in other Places where it was observed. The Observation was made by a nine Foot Glass. Having adjusted a monthly Pendulum Clock by a Meridian Line on the 30th of Jan. and further corrected by the Meridian, Feb. the 6th 1728-9. Hours apparent Time. | h | m | s | |---|---|---| | 6 | 27 | 0 - - Penumbra observed. | | 29 | 30 | 0 - - Moon's Limb immerged. | | 33 | 0 | 0 - - Eastern Limit of Palus Mareotis immerged. | | 35 | 50 | 0 - - Mons Climan. immerged. | | 42 | 40 | 0 - - Mons Porphyrites immerged. | | 50 | 0 | 0 - - Insula Melis immerged. | | 52 | 40 | 0 - - Mons Ætna immerged. | | 54 | 20 | 0 - - Inf. Sardinia immerged. | | 56 | 20 | 0 - - Inf. Rhodes immerged. | | 58 | 0 | 0 - - Inf. Corsica immerged. | h7 - o' Hours apparent Time. | h | " | |-----|-----| | p.m.| | | 7 | 30 | Mons Sinai's, Eastern Limit immersed. | | 2 | 0 | Mons Sinai totally immersed. | | 6 | 50 | Inf. Besbicus, Eastern Limit immersed. | | 11 | 50 | Mons Herminius immersed. | | 13 | 50 | Promontory Archeroulia im. | | 22 | 0 | Mare Caspium, Eastern Limit immersed. | | 24 | 20 | Palus Maeotis, Eastern Limit immersed. | | 27 | 30 | Palus Maeotis, totally immersed. | | 30 | 15 | Moon totally immersed. | | 9 | 8 | Moon's Eastern Limb emerged near Mons Acabe. | | 13 | 0 | Palus Maeotis emerged. | | 15 | 0 | Mons Climan. emerged. | | 23 | 30 | Mons Porphyrites emerged. | | 29 | 10 | Mons Sinai emerged. | | 33 | 30 | Mons Ætna emerged. | | 49 | 0 | Inf. Besbicus emerged. | | 10 | 1 | Mare Caspium, Eastern Limit emerged. | | 5 | 0 | Palus Maeotis emerged. | | 10 | 0 | A Penumbra observed, the Moon's Limb emerging. | | 11 | 0 | The Limb evidently emerged. | From the Beginning to the End of the Eclipse 3\(^h\) 44'\(^m\) Totally Eclipsed —— 1\(^h\) 38'\(^m\) 15'\(^s\) IV. De