[ 28 o ] 
XVI. An Obfervation of an Eclipfe of the 
Moon, Dec. i 2. 1 749. made at Earith, near 
St. Ives, in Huntingdonfhire, by Mr. Wm. 
Elftobb, jun. cojnmunicated in a Letter to 
Martin Folkes, Efq\ Rr. R. S. 
Read Dec. 21 
1 749 * 
at Night the Umbra came on 
A t 7 
the lower Limb of the Moon, aj- 
moft dire&ly under the Spot called Tycho, in Keil’s 
Map of the Moon. 
At 2 Min. | after 7, the Penumbra overfpread 
Tycho. 
At 6 Min. after 7, the Umbra approached the 
lower Part of Mare Humorum , and Tycho immerged 
into the Umbra. 
At 21 Min. after 7, Mare Humorum totally im- 
merged into the Umbra. 
At 41 Min. after 7, the lower Part of Mare Nec- 
taris immerged into the Umbra. 
At 57 Min. after 7, the North-Eaft Limb began 
to evolve itfelf •, and that Part of the Limb below 
the Spot called Grimaldus , began to appear brighter, 
than when the Penumbra covered it. 
At 9 Min. after 8, the upper Part of Mare Hu- 
morum emerged from the Umbra. 
At 21 Min. after 8, Mare Humorum totally 
emerged. 
At 4y Min. \ after 8, Tycho emerged from the 
Umbra. 
At 51 Min. 1 after 8, the Penumbra left Tycho. 
At 
