350 PHILOSOPHICAL TRANSACTIONS. [aNNO I676, 



The same Occultation observed at Greenwich, by Mr. Flaiiuteed-^ being jiug. 21, 

 O.S. before noon. N° 129, p. 723. 



By several altitudes of the sun's lower limb, taken before the occultation, it 

 was found that the error of the clock was 4m. 55 s. too slow. Then, afternoon, 

 the sky being very clear, the following observations were taken : 



Time by the Time 



Clock. Correct 



h. m. s. h. m. s. Distances, &c. 



10 45 3 — 10 49 58. . Mars from the moon's bright limb. . 5125=42' S'^ 



11 35 57 — 11 40 52. . The same distance 1982=l6 18 



11 57 31 — 12 2 26. . cjfromzen. ordif.alt.inf.limband(5. . 1912= 7 35 

 3 2 5 O — 12 9 55. . Planet no longer vis. to naked eye. . 



,^ , . « fLiffht of A confounded with the 



12 9 44 — 12 14 39. .^ ^ , v i_. * r 



^ L moon slight. (^ from zenit. ... 1158= 5 AJ 



12 10 3 — 12 14 58. . (5 quite covered by northern cusp. . 3475 = 17 20 



12 24 58 — 12 29 53. . 41 in y froni the limb or cusp 3935=32 21 



12 46 O — 12 50 55. . Diameter of the moon 5971=29 47 



13 10 56 — 13 15 5\. . (S emerg. perhaps 4''' or 5'' sooner 



13 13 29—13 18 24. . (5 from the northern cusp 3675 = 18 20 



13 22 O — 13 26 55. . (( 's alt. 23°. Her diameter 5988=29 55 



The same Occultation observed at Oxford, Aug. 21, 1676, P. M. by Mr. Halley. 



N° 129, p. 724. 



Correct time, 

 h, m. s. Distances, &c. 



11 43 30. . Centre of ^ from the (['s nearest limb . . 7194. = 12' 40" 



1 1 54 48. . The same 409 = 712 



12 3 25. . Centre of (J from the (( 's north cusp 1118 = 1941 



12 10 28. . The gibbous part of ^ touched the ([ 's limb 



12 10 42. . (5 wholly covered; distance from the cusp . . 963 = 17 14 



13 10 41 . . Centre of Mars emerged 



13 12 45. . S dist. from (( 's northern horn 1018 = 17 55 



13 52 35. . ([ 's alt. 31°. Her diameter observed ...... 1698 = 30 1 



13 57 52. . (5 from the ([ 's north horn 2042 = 36 5 



14 2 53. . (5 from the ^ 's south horn 2266 = 40 3 



Having carefully considered the moon's parallaxes, in the observations of this 



occultation at Pantzic and Greenwich, I find from the immersion the difference 



