A Collection of the Observations Made on the Eclipse of the Moon, on March 15. 1735-6. Which Were Communicated to the Royal Society

IV. A Collection of the Observations made on the Eclipse of the Moon, on March 15. 1735-6. which were communicated to the Royal Society. 1. Eclipse of the Moon, observed by Mr. Geo. Graham in Fleetstreet, March 15. 1735-6. | H. M. S. | Description | |----------|------------------| | 10 13 00 | The Beginning | | 11 11 00 | The total Immersion | | 12 49 00 | The Emerision | | 13 47 00 | The End | 2. Dr. Halley at Greenwich observed, | H. M. S. | Description | |----------|-----------------| | 10 13 37 | The Beginning | | 11 09 42 | The Immersion | 3. Ob 3. Observations on the Lunar Eclipse of March 15th, 1735-6, made at Mr. Graham's House in Fleet-street, by Mr. Celsius, F.R.S., with a reflecting Telescope of eleven Inches, magnifying Sixty-three times, and made at Edinburgh. | H. M. S. | Description | |----------|-------------| | 10 22 05 | The Shade on the Middle of Kepler. | | 23 15 | Entering the Mare Humorum. | | 28 16 | Entering on Copernicus. | | 29 34 | ———— the Middle of Copernicus. | | 30 26 | Copernicus entire. | | 33 28 | Enters on Timocharis. | | 38 44 | Enters on Tycho. | | 39 12 | The Middle of Tycho. | | 40 48 | Tycho entire. | | 46 00 | Enters on Menelaus. | | 49 20 | Plinius. | | 11 00 | Enters on Mare Crisium. | | 5 36 | Mare Crisium entire. | | 9 17 | The total Immersion is about to begin. | | 13 13 | Tycho is emerged out of the Shade. | | 29 00 | Mare Serenitatis is totally emerged. | | 40 45 | Mare Crisium is totally emerged. | | 45 50 | The Eclipse is nearly ended. | | 46 12 | The Eclipse is certainly ended. | 4. Ob- 4. Observationes habitaæ in Covent-Garden, Idibus Martii 1735-6. S.V. per D. Bevis, M.D. Tempos Ver. P. M. 6 53 47 Saturnus in puncto decussationis filorum micrometri. 7 31 05 Hyadum primus ad filum a transit. 7 31 50 ---filum horariunt b transit. 7 32 35 ---filum transit. 7 42 39 Saturnus iterum in filorum concursu. 8 19 57½ Hyadum primus ad filum a transit. 8 20 42½ b transit. 8 21 27½ c transit. 9 50 00 Discus Lunaris horarium filum percurrit 139 minutis secundis horariis. 9 56 00 Iterum 139''. 10 01 00 Iterumque 139''. 10 09 40 Penumbra tenuis Lunam propè Hevelium obnubilare videtur. 10 10 20 Jam valde sensibilis. 10 11 40 Initium defectûs pono. 10 14 38 Limes umbræ, quantum censeo, per Grimaldum & Cavalerium transit. 10 19 46 Per Aristarchum. 10 24 15 Umbra Marc Humorum ingreditur. 10 32 44 Sinum Roris tegit. Tubo scilicet objectum invertente. Tem-Ver. P.M. 10 32 44 Luna per Nubes vix cernitur. 10 40 18 Tychonem umbra dividit. 10 42 26 Mare Serenitatis attingit. 10 46 01 Menelaum tangit. Nubes atra supervenit. 10 53 46 Discidente Nube totum Mare Nectaris tectum deprehenditur. Densissimae Nubes Lunam iterum adi- munt. 11 00 56 Umbra Mare Crisium tangit. 11 05 48 Immerguntur Mare Crisium & Mare fœcundum. 11 10 00 Totalis Lunæ in Umbram Immersio. 12 42 20 Clarescit jam Limbus Lunæ orientalis. 12 46 05 Fit clarior adhuc. 12 47 56 Filamentum sinceræ Lucis quasi iectu oculi restituitur. Nubeculae plurimæ fugaces. 12 57 05 Limes Luminis attingit Mare Humo- rum. 13 04 03 Totum Humorum Mare recuperatur. 13 13 40 Semitegitur Tycho. 13 14 00 Retegitur totus. 13 17 22 Waltherus emergit. Multæ Nubium caligo diu, uti vide- tur, duratura. 13 43 44 Mare fœcundum extra umbram cer- nitur. 13 46 25 Umbra vera definit. 13 48 30 Umbra notha non amplius sensibilis. In hisce observandis Horologio bonae notae pluribus retro diebus, etiamque hac ipsa die, per quinque solis altitudines correspondentes debitâ prostapharesi correctas exacto, Tuboque optico sex pedes longo utebar. Circa medium obscurationis Luna quasi per Nubeclum subfuscum conspiciebatur, ad margines autem candentis instar ferri rubebat. Terminus Lucis & Umbrae per totum Eclipsin haud probè definiebatur. 5. Observations of the Moon's Eclipse, March 15. 1735-6. at Yeovil in Somersetshire, Latitude 50 Degrees 52 Minutes, by Mr. John Milner, communicated by John Allen, M.D. F.R.S. N.B. The Clock was first adjusted by the Equation-Table. | Event | H. M. S. | D. M. | |-------------------------------|----------|-------| | The Beginning | 10 | 6 | | The Moon's Altitude then | | 34 | | The Beginning of total | 11 | 4 | | Observation | 30 | | | The Altitude then was | | 34 | | The Middle | 11 | 54 | | The End of total Obscuration | 12 | 43 | | The Altitude then was | | 30 | | The End | 1 | 39 | | The Altitude then was | | 15 | | The Continuation of the total Obscuration was | 1 | 39 | | The Duration of the whole Eclipse | 3 | 33 | V. In-