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in various direcftions as the current of the ferum in»* 
dines them, or as they themfelves are more or lefs 
attracted by each other or by, the talks, till the whole 
has found a Ifate of reft. 
The magnifier applied was a fpherical glafs, which 
he computed to magnify the objedt 512 times in 
diameter. 
In thefe views, the globules, though they varied 
a little from each other in their outlines and dimen- 
fions, appeared in general to be circular or elliptic, 
and of the fize of fwan-fhot. Their figure as folids 
was not eafily to be determined in fuch an expofition 
of them, but they had the appearance of oblate 
fphaeroids much comprefted, although, from their 
free motion with the ferum, it was manifeft they 
fuftered no preftlire from the talks ; where the focus 
was perfedt, or nearly fo, the middle part of each 
globule was darker than the margin j and this differ- 
ence in fhade gave them an appearance, as if a dent 
or concave impreflion had been made on their fur- 
faces, which refembled thofe of young peas that 
have dimpled in the boiling. What this darknefs 
next the center was owing to, will appear from the 
fecond obfervation j but in this I could not judge it 
to arife from any thing but a finldng in of the furface 
in that part, or fome accident of the light that fur- 
nilhed fuch an appearance. 
July 9’^, a fecond obfervation was made with the 
fame inftrument, to which was applied a fphere 
which magnified the objedt 1280- times in diameter. 
In this view,, the variation of fhade on the middle 
part of each globule from that "of the margin, was 
fuch as carried with it ftrongly the appearance of a 
perforation. 
