( 15^; ) 
or if it adhered to the limb, the great Tremulation of the 
Atmofphere hinder'd me from feeing it. 
Aftronomers have by thefe Spots found, that the Sun 
revolves on its Axis, fo as that in 27 days the fume point in 
the Suns Disk returns to the fame place feen from the 
Earth, hence its Seipirevolution in 131 days, and confe- 
quently the Spot going ofF the Suns Disk, the igtb of Jur^t 
may be expedec! to return the .2d of July next to the Eaft- 
ern limb of the Suns vifible Hemilphere, if it be notdil]b!v» 
ed before that time. I have in the 'following Figure en- 
deavoured to exprefs the appearance, but had not the 
conveniency of meafuring the angle of the Spots way, vvitli 
the Vertical, which is only guefs d at. 
June the 26, 1703. In the Evening I looked to fee whether 
there were generated any new Spots in the Sun, but found 
none 5 but on the 27th about half an hour after 8 in the 
Morning, by receiving the Suns image on white Pap r from 
the 6 Foot Glafs, I faw a Spot near the Vertical of the Sun 
towards the lower limb, betwixt 9 and lol eleviued the 16 
Foot Tube,the Clouds now being oi a convenient thicknefs to 
let me fee the Sun without pr^udiceto my Eyes, and found 
that this Spot v/as of atriangular form, and that it was -m:- 
companied with 2 other lefler oneSjas is expreft rnFi,s:ni e the 
ift, the fides of the great Spot were curvilinear, thh w'nh i. 
lelfer ones made an EquicruralTriangle at 4 in the After 
noon theTriangular Spot had a fmall fragment (eparated fvom 
it, and it felf was now become Elliptical, the Spot 1). d. v^a-s 
much augmented, but the Spot c. diminiflied, and become 
longifh, as in Figure 2, at half an hour after 5 the ffagment 
from thegreatSpot was it felf divided inro 2 and the S^>f)rc. 
was fo narrow* asfcarceto be feen,asat fig, 5, at 6 a Clock, 
and 50 minutes there was a fmali fraga/cnt {eparated from 
the lower end. ;of the great Spot; .as at, Fi^':nre%' at 7 a 
Clock the Spot b> was much encrcas'd, but c. was vahidiVi 3 
the obfervations made this'Afierrtooq with the j6 Foot 
Glafs,were when the Air was' clear ancffo to feurc my Fyc, 
the Eye Glafs wasfmoak'd with a Wax.C;uidle, The 
