( iH)

5h z&. in die Morning, he saw it again returned percisely to the fernePlace. Mar. Z- He together with M. Buot and M. Marione , began to seeat 8 h 4' the Spot already sbmewhat removed front the Oriental Limb, butyct obscure and lmall. At 8* 1 47^ they few it very distinctly advancingtowards the middle of the Belt. From t; h y ; 40". until 9h 8'. they fewit in the midst of the Belt. At 9 h 1y'. it was past the middle, and was comenearcr to the Occidental Limb. And a litde aster the Heavens being over-cast, he could observe it no fürther.

Places of Jupi-ter obfsi-ved ,hy M.-. Flam-iteed at Der-by. «. 32.

f. 4°3 6-

LXXXV. i. shi. i f>7 * - Fcl>- 16. 7h 44i / . Alto Jove 18 0 io'. ejus Distan-tiam ä Fixa Lucis 4** ( cujus Lat. i° 40' Bor. Locus Mihi HE 14 0 7 / 16".at Streetio, 14 0 3' 54") Tubo Longiori dimensus sum, 16' 33 s. & Diffe-rentiam Altitudinum Centrorum ¥ 8c d 1".

17 Fcbr. 7* 1 Zy. p. m. Alto ¥ 1 5 0 54/. ipse a Fixa distitit Z V yO 7 ^Altitudinum disterentia erat 8' 40'si

18 Fcbr. 7 h d. Fi.x.c distantia a Centro ¥ erat 28 1 15"; Altitudinumdisterentia cire. 1 y 7 zv,". In utraque Observatione Erro Aitior erat Fixa, aqua sernper Meridianum versus Stetit.

Inito dein Calculo ad dies singulos & horas observationum, investigavi

Februar.

d. h. ' j d. h. '

16 7 441 { 17 7 25)

d. 7 "

18 7 0

Jovis a Fixa Longitudinem in An-

secedentia —- - -

Latitudinem ad Austrum ab ea-Ergo Latitudo Borealis-.—

Locus verus W . . .. {^ <a

i

0 / // 0 t ft

0 9 ld 0 17 zz

0 13 30 0 13 14

1 2.6 30 1 26 46

13 yS 0 | 13 49 54

i? 54 Z8 (13 4 6 32

0 t n

0 zy iz0 iz 45

1 27 iyr 3 4z 413 38 42.

X. Mar. 1 y. v. Observare coepi favis distantias &t Positiones a Stella SI 3S,cujus Latitudo i° zd i Bor. Locus Streetio HE 9 0 5-4 1 o"; mihi vero N90 fl' lo// - 7 h Z S'- f• m - Alto 3 ' 2 - 0 S z> - Distantia Centri Ipsius ab ipsa33' yo 7/ . Altitudinum Disterentia circit. zo' 4z".

Mar. 16. 7 h 48'si A.ha Fixa 360. Jovis ab ea distantia erat zj' Alti-tudo minor 1 6 ' 3".

Mart. 19..Alto ¥ Z9 0 35s / . i. e. 6^ 4)si Fixa Aitior erat quam Fla-oietaz' 2.4"; ä quo 6 h yy 7 . distitit, ic/ 21".

Hor. 7. ii. Satelles 4 tus a Fixa, 7' 2.8". Etiamnum Erro semper aitiorapparuit, sed vere fuit depressior, quam Fixa : postea humilior visus est, sed re-vera fuit Aitior.

Mar. zo. melius praeparato ad Altitudinum Differentias capiendas Micro-•metro, observationes habui f sic putem) accuratissimas, quae sequuntur.

Jov.