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Ihe mark of

comrlcle dilrolution. In Ihe dinillation

of whcy, the

fapon~ceous

maner contained therein is de–

compofed ; the Caline pm rifes 6rfl, as beingthe lighltfl;

Ihis is the acid laken notice of in Ihe proceCs; after

which the oil, now fepara,ed froOl Ihe pnncipl: which

r~ndered

it OliCcible with waler, comes over in ils natu–

ul farOl, and doth not aftcr\Vards mi" witb Ihe aqueous

parto

Befides the Caponaceous maner, whey conlains alCo

another faline fubllance; naA1ely,

Cea· f~lt:

this is ob–

lained by lixiviating Ihe

capu/ mor/uum

left in the re–

tort,

which, becaufe of iu 6xednei's, cannot rife witll

me otller principIes in dinillalion. To' this (,lt it is.

'owing Ihat what remains in the retort after diflillation

grows moifl iD the air ; for we know Ihat fea-falt tho–

roughly dried hath Ihis property.

The 6xed alkaline

C~lt,

obtained from the

capul mor–

'uum

burot 10 alhes, proves

Ih~1

milk flill retains fome'

thing of the vegetable nature: for Ihe following analyfis

will lhew us tllat matters purely animal yield nooe at

all.

Of the Suhflan.ceI wbicb compofe an Animal

Bod)'.

B/ood an'&fod. ll1f1ancd

Bu/loel', B/ood.

IN a

ha/n~um tnari~

evaporate all the momure of

the blood that the heat of boiling water will carry off.

There will remain an almofl dry manero Put this dried

blood iota a glafs retort, and dillil with degrees of heat,

till nothing more will come over, even \\'hen the relon

il quite red-hot, and ready 10 Olell.

A brownilh

phlegmwill rife at fi rfl : lhis will foon be impregnaled

Wilh a linle volatile alkali, and lhen will come over a

yellow oil, a very pungent volalile fpirit, a volalile falt

in a concrete forOl, which will adhere to the fides of tlle

receiver; and, at lan, a black oi l, as thick as pilCh.

T here \ViII be ldt io the retort a charred mmer, which

being burot yields no fi xed alkali .

Blood, which is carried by Ihe circulalion iota all the

pans of the acimal body, and f\11'nilhes the mmer of all

Ihe fecretions, mufl be confidered as a liquor confilling

of almofl all the fluids necelriry to the animal machine:

fo that Ihe analyfis IhereoC is a fon of general though im–

perfeél analyfis of ao a]lima!.

Blood drawn from the body of an animal, and fet by

in a I'clrd, coagulm s as it gro\Vs caId ; and fometimes

aflerwards Ihe

congu/llm

difchargcs a yellowilh

flrum

or Iymph; and in the midíl lhereof fwims the reo par!,

which continues curdled. Thcfe tWO fubíl.lOces, when

analyfed, yield oearly Ihe fame principIes; and in lhat

refpea fcem

di{fe¡ Hnle from each olher. Though

,he (erum of bloo<! be naturally in a fl uid form, yet it

halh alfo a greal lendency to coagulm ; and a cenain

degree of hm applied la il, either by water or hy a na–

keJ 6re, "ill curdle it. Spirit

winc mixeo "ilh this

liquor produces on il lhe fame <lrd l as heat.

Blood, while circulating in the body of a heahhy ani–

mal, and when nel\ly taken from it, hath a mild tane,

"hich difcovm nothing like either an acid or an alkali;

Dor dOlh,.il Ihew aoy hgn

cither the ooe or Ihe other

y ,

17S

io chemical trials. When taíled with attention, it

be"

trays fomclhing like a favour of fea·fal!; becaufe i¡

aa ually contains a liule thereof, which is found in the

charred mauer left in the retort aCter the dinillation,

when carefully examined.

We fhewed Ihat milk aIro contains a li\tle of this falt,

~nters th~

bodies of animals \Vith the food they

eat;

\VhlCh comalOs more or lefs thereof accordíog to itl Da–

t~re

plainly fuffers no aheration by undergoiog Ibe

dlgenrOns, and pafling through the Hraioert¡ of ¡he

ani–

mal body. The cafe is the fa me with the other neutral

fallS \Vhich have a 6xed alkali for their bahs: we find

them uochaoged in the juices of animal, into whofe bodiel

they have been inlroduced. They are ¡ocapable of com–

bining, as acids do, with the oilly pans ; • aod fo are

dilrolved by !he aqueous fluids, of which nature make.

ufe to free herfelf from thofe fahs, and difcharge Ihem

out of the body.

Blood,like all other animal·matten, is, properlyfpeak–

¡ng, fufceptible of DO fermentationbut Ihat of putrefac–

tion. Yet it turos fomewhat four before it potrc6cs',

This fmall degree of acetous fermentatioo is moíl fen–

fiblt io flefh; and efpecially in Ihe flefh of young animals,

fuch as cal'es, lambs, chickeos, &c.

The quantity of pure water, which blood, in itl na–

tural /late, contaios, is very confiderable, aod makes al–

mofl feven eighlhs Ihereof. If it be diflilled, wilhout

being

6~11 ~ried,

the operatioo will be much longer

becaufe

\VIII be necelrary to draw off alI this infipid

phlegm wilh

gentle fire. There is no reafon to appre–

hend that, by drying blood io open velrels as direéled,

any of ils other principIes wilI be carried off with its

phlegm: for it conlains no olher fubflance that is vola–

tile cnough to rife wilh the warmlh of

a·ha/n,um

mari~.

This may be proved by puuing fome undried blood into

a glafs cucurbit, fitting therero a head and receiver, aDd

dillilling, in a

ba/n,um

mori~,

all that the heat of the

balh, not exceeding Ihe heat ofboilingwater, will raife:

for, \VheD nOlhing more will come over, you will find iD

the receiver ao infipid phlegm only, fcarce differing from

pure water, except in having a faitÍt fmelllike that of

blooo; wherein it refeOlb\es all Ihe phlegms that rife

6rll in diflillalion, which always retain fomethiDg of the

fmell of the matters from which they were drawo. That

polTt of the blood, which remains in the cucurbit afrer

this [¡rn diílillalion, being put imo a rerort, and dinil–

led with a Hrongcr lire, yidds exaélly the fame prin–

cipIes, and in the

f~me

proportion, as blood dried in

apeo velrels in the

baln~uln lIIari~:

fa Ibat, if Ihis

phlegm of blood conlains any principIes, the quaolit,

thereol is fo fmall as to be fcarce perceptible.

The volalile alkali Ih.1 rifes ",ilh the oil, when blood

is diflillcd in a retort with a degree of heat grcaler Ihan

that of boiling water, is eilher Ihe produtlioo of the

fi rc, or arifes from Ihe

~compofilion

of an ammoniacal

fah of which il made a part o For IVe fh all fee, when

IVe come

treat of Ihis Caline fubn. nce, that it is fa

eXlrelOtly volalilc as la exceed, in that refpea, alOlull

all olher borlies Ihat We know : and therefore if Ihis va–

Imile alkali pre.exilled formerly in the blood, UDcom–

bioed with aay other mmer capable, io fome meafure,

oí