t 2095 ) 
Some CommumeaHonSy confirming the prefect Appear ^me 
the Ring about Saturnj by M, Hugens de Zul^chern^»^ 
T Be firmer wiiteth in a Letter of his, dated at the Hague 
Oftob. 167c. ft. p. That he obfervM ^^^^^r» with, 
his Telefcope of 22 feetja little before he came out of France^ 
which was the la ft Summer of this 1670, and Taw his Figure 
to be very conform to what it ftiould be according to his Hj/- 
pothefis y viz* the or Arms to be very oarrow^ infomuck 
that their opening appear d not bat very pbrcurely. 
The Latter hath obferved the feme in j^^^^^rf^^^jSeptemb. 16. 
ft. v. as is reprefeoted in Tab^ i . fig, 3, 
. An ExtraBoHt of a lately ■'J^rmted^EpifioUrji Addrefs^ made 
to the G, DukeofToiomy tombing Jo me AnHomical En- 
gagements^ ^ Laur, Beliioi, Ord, Anat. rrof, at PifaA 
T Promife (faith that learned Anatomift) to give the whole 
I DocStrine of Rejpiraiion^ and to coropreheod it in that or^ 
dtr^thatifl am not deceived in my own anair^the matter of 
the .principal part of the Breaft^and the whole Fabrickofthe 
X^/^i fhall be made certaio and evident 5 fqrafmuch as all 
thiogs do fo aptly anfwer to one anotherj and are grounded 
trpon GeeiTietrical Prirciples. The fum of it is this in' the 
Au'thors own words. ■ 
Euit in Afptram Arteriam aer^ memento compojito ex gravis 
tati vi lateralis eaque Aeri ^ extrinjecHs fuperficiem pcQoris 
circHmprimerJiydq-uiponderat. Hinc mufculis Injpiratoriis Jef§ 
contrahendi poiefias permittituT'^ unde Cofiarum ekvatio ac du 
tatatU^ au^a Pe^-oris amplitudo : 7um pemtior Aerts ir^ 
rupfio^ €^ expanpo dn&uum pulmonarium 5 qtiodtotum ifi Iti" 
{^itMomconti^git, 
Mox proprio ponder e concidentibus fupra iHmdHni'Pulf^o-' 
mmcojiisy/patinm PeUoris fit Angufiius^^ ipfarnm dfi 
phragmatis vi pHlmo cvmprimiiur ^ Aerque 'fartimper os extru* 
E e 2 ditur^ 
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