An account of a i'pot fan in the ^un frorh the 2<^th, 
of h^nlto the Eth. ofU2j inflant^ with the line 
of its Comk preciiSied^ if it make a kcond Re- 
turii^ i F. Aftron, Reg« 
N the 2ftb. of April larf paft, as I was meafuring 
the defiance of the Planet 9 from the S^n^ about 
ao hour before Noon I difcovered a large 6^^^ entred 
within his dijhe^ little diftant from his following Limb. 
Thefe appearances however frequent in the days of Scheie 
ner and Galileo, have been £o rare of late that this is the 
/ only one I have feen in his face fince December 1676* 
Wherefore I thought an account of it might not be unac- 
ceptable. By theobferved MmW^'o/z^/diftances of it and 
the^'^^V Southern from tliQ Fertex at Noon I found 
it to have 3' 40" more f^r^^/; i^-^r/Zw^^/^j^ than the Siins cen- 
ter , and at 3^. 3 f after Noon I meafured its dijiance from 
his next o'4o". 
Next morning Jpril 26, 1 faw it more remote from 
his Limb, and by the Obfervations then made f'at 8 h. 
mane) determined its Longitude from the Suns Axis 66 
ideg, and its declinationfrdm the/i/^r £^/i^f(?r 9 f 
South. Whence fuppofingthe jR^volutton of any point 
of th^Sun to the iame/x^iS/-^r to be performed in 25- 
days 6 hours, th.e Angle of Equator and om Ecliptick^ 
7 degrees, and the Longitude of his northern Pole W 16 
deg, Idefigned theL/;2^of its^^jK^^^ trace over the S^*^;? 
and the Points in it where the S^^?^ v/ould appear every 
morning after at the fame hour, till its egrefs on the ^th, 
oiMay, as in the Figure,which I found altogether confir- 
med by fuch Obfervations as I made till then, fothat 
I had no reafon to doubt of the Theory. 
O When 
