( 4H )

the fame Morning, the Air being vcry bad ( thougb to Appearance exceedingclear, and causing all the Stars to twinkle, and the Minute Stars to appearvery thick ) the Bcdy secmcd like D ; which I still sopposed to be the Re-pi e.'entation os die (ame Spots through a more confuled and Glaring Air.

But ob.'erring Mar. 2.1. 1 was (urprikd to find the Air ( though not soclear, as to the Appearance of.fmall Stars) so cxceeding transparent, andthe Face of Mars so very well defined, and round and distmct, that I couldF'S- manifestly ke k of the Slvape in E, about half an Hour asier 9 at Nighr.

The Triangular Spot 011 the Right-fide ( as it was inverted by theTeldcope )accoiding to the Äppearances, through which all the preceding Figures aredrawn ) appeared very blackand dlstinct, and the othertowardsthe lest moredini ; but both of theni sofhciently plain and defined. About a Quartcr bc-fore 12. of the Clcck the (ame Nighr, I obkrved it again with the fameF x- l50,i Glals, and found the Appearance exaclly, as in F ; which 1 Imagined tolhew me a Motion of the former Triangulär Spot.

Mar. 2.2.. about half an Hour after 8 at Night, sinding the fame Spots inF ‘k- the knie Follure (as in G) 1 concluded that thepreceedingObfervation was

enly the Appearance of the (ame Spots at another Heiglit and Thicknds ofthe Air: and thought my (elf conhrmed in this Opinion, by finding them inpf. >;2. nuicii tue kirne Posture, Mar. 23. about half an Hour after 9 ( as in H)thougb the Air was norhing so good as before.

Mar. 28. about 3 of the Clock, the Air being light (inVVeight) thoughF ‘S- '53- meist and a lüde hazy ; I plainly läw it, to have the Form reprdentcd in kwhich is not rcconcileablewith the other Appearances, unlds weallow a Tur-- binated Motion of Mars upon its Center: Which, if soch there be, frcnVtheOblervations made Mar. 21, 22,and 23. we may guess it tobeonce or twice• in about 24 Hours, unless it may have some kiud 01 Librating Motion 3 which

, ' . leems not (b likejy.

Tbt rarallaecof XC 1 V. An. \ 6 yi. Scpt. Micrcmetro & T ubo 14 pedum, ..Martis Distanti-M ars K ‘ as a duabus Fixis eadem Nocte dimensos kirn : unde didici Paralaxin cius

rlamiteea. . rr n i* n

n . 89. p. 5118. Acrcnici & Perigei nunquam majorem este Scrupulis Secundis 25'; unde le-n. 96. p. fiioc. qijjfur, Solis este somnium ic", & Distantiam 21000 Terre Semidiumctrus.'

rhpesof Mars XCVF i. An. 1671. Mais 14 mane, ibat Martis Sidus prope Stellam di-Oarby ; ‘cy Mr. ctaill, Qu.f ad'Clunes Aquarii', cujus Latitl do 2° 0> o". Lccus tum mil.i,Klamsteed. 2 <o , -J o". zz , Strcctio , 24 0 Q 1 oo'k C qua notabam.

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