( 5010 ) 
into the Emulgm through the left Lum^ 
bjiry vein ( which we have ever obferved to 
come from the Emulgent^) and at the fame 
time we faw it come away through the o- 
ther Lnmhary. 
This Experiment having been feveral 
times repeated without our being able to 
fee the track,' which we had obferved un- 
der the Pleura^ when the firft Difcovery 
of this Communication was made ^ which 
track feemed to ftiew the way, which the 
.Thoracick branch keeps to entertain a 
communication with the inferior venacava\ 
We refol ved to attempt a more cafie and a 
more certain method of difcovering this 
branch, than the ufual difieftion of the 
veffels, performed by fevering their pro- 
per tunicles from a multitude of mem- 
branes and fatnefles, which lying and cm- 
baraffing them^render this work very dif- 
ficult crpecially when the vefiels are not 
filled with blood to make them vifible, and 
becaufe they are compofed of more deli- 
Cite tunicles, than thofe of the Veins, 
(H,) This way was,to fyringe into the 
Trunck of the ^n^m thoracicus a Compolj- 
tion, that might run into it being hot,and 
which by being refrigerated might become 
folid enough to afford a greater facility to 
follow and trace the channels, in the ca. 
vity of which it fiiouldbe thus hardened. 
And this defign fucceeded in part. For, 
the Compofition filled the whole dn^us 
thoracicm^ and afcended as far as into the 
fnb-claviM ^ but there pafl'ed nothing into 
the channel that makes the communicati- 
on fought for, though care was had to 
warm the ambient parts by feveral injedi- 
ons of warm milk , to the end that the 
Compofition might not harden before it 
had penetrated into all the conduits. We 
alfo tryed to injed the fame Compofition 
through the Lpimbary that iffues out of the 
Trunck, if its valves would permit it 
hxxithey flopped all that we endeavoured 
uncertain ': But If there be 
my fuch ntAde , the Liver 
and Kidneys do fo readily ex^ 
oner Ate themf elves into the 
vena cava, that the imfref- 
fions^ be they what they will, 
aref^nickjy conveyed to the 
Heart without any great di- 
minution of them. And 
whereas the Author mentions 
the chara^ers imprejfedfrem 
farts ^ thofe ^ {if any fuch 
be) may more juflly be fup- 
pofed to be conveyed in the 
lympha , which licjuor feems 
to be A produfl of thofe parts 
ctirioufly elaborated in 4he 
very fubfiance of them. 
(E.) what is fuffcient 
and nG,t fuffcient^ mufl be 
judg-ed of by Nature^ and not 
by Vs, Tet^ if we confider 
the time that is fpent in car» 
rying the Chyle up into the 
Bloody it is eafie to believe y 
that A muckgr eater cjuantity 
of liquor may be difcharged 
by that dudus, than is ufu* 
ally pretended to. 
(It ) what thofe Expe- 
riments are y we Jhould be 
glad to know. But the Ex - 
periment @f i66j {if I right' 
ly remember it) wa^ only a 
iufus naturae, found by M. 
Pecquet, which I there^ 
fore call fo^ becaufe neither 
he, nor any one elfe hath found 
it fince : whereM the vafa 
iadea, andthewaiesofor- 
dering them, are fo well 
known^that ,if any fuch thing 
werejt could not long be hid, 
(G.) An ln]eltion int9 
the Lumbary vein with its 
effetis 
