pamed by his brother. Dr. Ball ' OBbberi 3. 166 5. at fix of 
the Clock, at Biainhead near Exeter in DevonJhire,w'\th a very 
good Telefcope near 38 foot long, and a double Eye-glafs, as 
the obferver hirnfeif takes notice, adding, that he never faw 
that Planet more diftin&\ The obfcrvation is reprefented by 
Figure 3. concerning which, the Author faith in his letter to a 
friend, as follows ; This appear’d tome theprcfent figure of 
Saturn y. fomewhat otherwife. than I expected, thinking it 
would have been decreafing, but I found it full as ever, and a 
little hollow above and below. Whereupon the Perfon, to 
whom notice was lent hereof, examining this fliape, hath by 
Letters defired the worthy Author of the Syjleme of this Pla- 
net , that he would now attentively confider the p relent Figure 
of his Anfes orpjngfo fee whether the appearance be to him, as 
in this Figure , and confequently whether he there meets with 
nothing, that may make him think, that iris not one body of a 
Circular Figure, that embraces his Dis\e, but two. 
And to the end that other Curious men, in other places might 
be engaged, to joyn theirObfervatious wit,h him, to fee, whether 
they can find the like appearance to that, reprefented here, 
efpecially fuch Notches or HollownefTes, as at A and B, it was 
thought fit to infert here the newly related Account. 
A Relation of feme Mercurial Objervatim 
and their Refultr. 
Modern P hilofophers, to avoyd Circumlocutions, call that In- 
fhument, wherein a Cylinder of Quickfilver, of between 08. 
and 31. Indies in Altitude, is kept lufpended after the manner 
of the Torricellian Experiment , a Barometer or Barofcope , firfi 
made publick. by that Noble Searcher of Nature. Mr .Boyle,, 
and imployed by Him and others, to detedf all the mi nut va- 
riations in the PrefTure and weight of the Air» For the more 
curious 
