Septimo, Vtrum eomfenentes cHjufvlsmifceU coloresrevtrammmur ^ 
mvero fecernantur dmtaxat^ qumdo ex mixtura illavarii color es rurfum 
fr§dHCHnttir per RefrMonem ? 
QdiivQ^Denturne ulTt alii colores RefraEiisiie froduEli fritter eos^qms oriri 
oportet d CohribHS, ad radios diverjimode refrartgibiles fertinentihtiSy dum 
illi refraEiione ift^fecernmtur vel mifcentur > 
Per Exferimenta determinare kec Jtmiliave ^^afita , ^u^ fropofitam 
Theoriam involvmty maxime genuina direUaque u'tdetur ad Conclufonem 
via: Preindi^He omnes vellmObjeEliomsfHfiendi^ qudi, ah HypothefibHs de^ 
fummtHr nlUfve Fontibm aliis , e^u^m hU duobus'^ quibm nempe vet oslen.i 
datur Experiment or nm ad deter minanda httc t.^-Ayutf.^ prshandafve ullas ados 
Theori<t me a partes infufficlentia^ hdlncinationes defeUHfque in Conclujimi^ 
hm meis inde dedu^is indigitando ^ vcl alia producantur Exferiment-a^ i dia.r^ 
metro mihi oppojtiaj fi cjtiji talia occurrere videantpir. Si enirn Experimentit,^ 
qud d me Hrgentur^ Uborant defeEiibm , diff,cile baud fuerit eos ofiendere 
p vero validafuerinty eoipjodHm The4triammeamaffermt frobant^j^^ecm^ 
n&s Obje^tones convellmt . 
Some A nm at ions of the Learned Dr. V^J^lttY^t^ccdhzm upon a Dif^ov^ry- 
pretendedto have been made by the famous Monjieur Pecquet of a Com - • 
municatxon between the Duftus Xhoracicus and the. Inferior VeRm 
Cavr. _ 
The Relation it felf of that pretended Dtfcove- 
ry, as it is to be found in the Journal des 
Scavans, ef Feb.8. i67:^, 
THE Bifcovery made about twenty 
years iince by iA.Pecquet the DhEIus 
ThoraeicHs, feemed not fufficient to clear 
up ail the Difficulties to be met with in the 
New opinion, which this Channel hath 
©ccaQon'd,. concerning Sanguification. 
It might be faid among other things, 
That there appears no reafon, why Na- 
ture, which dbes nothing without defign, 
fiiould carry, the nciatter of the Blood in- 
to the Sftb-clavials , and thence make it 
defcend by the Trunxrk of tht FenaCava^ 
( A^) unlefs it be to keep the Ghyle from 
entring all at once and altogether pure 
into tKe Heart, and that the mixture, 
which is made of the Chyle with the Blood 
along this wayj may difpofe the Chyle, 
by a kind afcontagiQus fermsnt^rioa thjer 
The Annotations of Dr= 
Needham,. 
(A.) T think the rea/om 
A there mentionektU' 
b'e very ffifficient. for the ift^ 
ferting of the Trmc\ of tM- 
Dudus Thoracicus mho. 
one place, alone^ \ at leaft, oi: 
good as any 'that: are after- 
wards given to prove tine 
contrary. For alL proofs 
of this nature^ are but hefe,, 
conjeBures at the bej^ t the^ 
matter admitting - of m g-\ 
ther demonftrmon than yvhak 
isiOQular^. 
( B. ) Till the Lower 
infer t ion be Ihewed , ar#> 
are bomd to beJiever^y that' 
NMMm thoHght the firigU- 
m9t^ 
