Septimo, Vtrum emf^nenns cujufvis mifceU cohres revira mHtentur \ 
m^ero fecernantur dmtaxat^ quando exmixturA ilUvarii colGrcs rurfum 
frUf^cmtHr per Refrafiionem f _ ^ 
0$t2Lv6^Denturne ulUaln colores RefraBkne freduU if fritter e§s ^qn$s oriri 
efortet a Cohrihus^ ad radios diverjtmode refrangibiles fertinentl^MSy dnm 
UlirefraBioneiftafecernunturveimifcentm 
Per Exferimentift deter minare h^c Jtmlii^ve ^ propojttam 
Theoriam involvunty maximi genuina direU^aqMe videtur ad Conclnjionem 
VIA ; TrQindeqtie omnes veHm dhjeUiones fufpendi, qm ab HypthefihHs de- 
[ummtur uHifve Tontibpu aliis , qtiam hUduebfiS'^ quibm nemfe vt\ ofk^0 
datur Exferimevtorum ad determinant^ h<tc l^mfJunT^ frehandafve ullas alP^ 
Theorize mea partes infnjficientia^ haUminationes defe^ufq^e in Conclufani-' 
btis meii\nde de^tiBiis i^di0andQ ^ vel aiia prodiicantHr Experimental e dia- 
metro mihi^oppofia, fi quji tali a occHrrere videantnr. Si enim Experimental 
qpiA a me ur^entur, labor ant defeciibm , difficile handfuerit eos ofleMdere ^ 
Ji vera validafueririt^ eo ipfo dnm Thtoriam m£m} (fiff'ermt, ^rebantqtieom- 
MS object ones convellmt. 
Some Amotationsof the" Learned Dr. "Walur Needharn upon a Difcovery 
pretended to have be^n made by the famous Monfvenr Pecquet of a Com^ 
munication between Dadus Thoracicus and the Inferior Veim 
Cava. 
Xhe Relation itfelf ofthat pret^yided Dlfcove- 
ry, a£ it is to be fo^mdin the Journal des 
Scavans, ojf Feb.8. 1672, 
TH E Difcovery made about twenty 
years fince by m. Pecquet the DuElus 
ThoracicHs, feemecf not fufficient to clear 
up all the Difficulties to be met with in the 
New opinion, which this Channel hath 
occafion -d,^ cpncerning Sanguification. 
It might be faid among other things^ 
That there appears no reafon, why Na- 
ture^ which does nothing without defign, 
ihouid carry the matter of the Blood in- 
to the *S'/^^''£'/4wVj , and thence make it- 
defctndby the Tfunck of the FenaCava^ 
(A^) unlefs it be to keep the Chyle from 
entring all at once and altogether pure 
into the Heart, and that the mixture j 
which is made of the Chyle with the Blood 
along this way, may difpofe the Chyle, 
by aliiid coiitagibus fermenrarioa the 
The Annotations of Di?« 
JSfeedham, 
(A.^ T thirik the rsapsm'^ 
X there mentioni^po^ 
be very fufficient for the in* 
f&rting ofthe T'runc^ of tl}^- 
Duftus Thoracicus into^^ 
one place alone ^ at le^Ji-^ m,.: 
good as any thap are afper^ 
wards given to prove tf)e: 
contrary. For , all proofs 
of this nature are hut JiofSf^ 
conjeStureS' at the bejl ■:■ tM 
matt€r admitting of no ^4 
ther demonfiration than yipka^ 
is ocular, 
( B. ) Till the ■ lower 
infertion be ihewed , 
are bound to helkve--^ t^^P. 
Nstum thought the- j^^^fe: 
