197 / 1042
174
e
H E
M
old, il will al lenglh dry of ilrdf: bUl then we Olould
nOl ObtAio froOl il lhe fame princlplrs
by
dillilla!lon; as
it corrupts aod bcgios
10
grow I'Utrid .rlcr fome lime,
efpcci ..lly if it be
001
mixcd Wilh (ume (ea(oning
10
pre–
(ene
il.
The fi rll phlcgm thal rifes io lhis di(\illalion, as io
lhal of butllr, is a portion of Ihe IVhey Iholt IVas leh io
the chee(e, oOlwithllanding ils being wdl prefred. This
phlegm grows gradually more acid, bcing the vehicle
of thc acids o( the cheefe, whieh are forced up along
Wilh it by Ihe fire.
T he acid obl.ined from lhis maller is lefs in quantilY,
and we.kcr, thao that of bulter: and accordingly the
oil diflilled from che& is
001
fixed like lhat of bumr.
Yet it is remarkable that lhe la(\ empyrcumalic oil,
whieh is as lhiek .s turpentine, is heavier thao water:
a propwy whieh it probably derives from Ihe quantilY
ofacid il relaios.
The quanlilyof charred malter, which remains in Ihe
relon after Ihe diflillalion of cheefe, is much gremr
than Ihal Itft by butlCr; which proves Ihal lhe former
coolaios a much gremr quaolily uf eanh.
Whq ana&fed.
E
v
AP
o
U TE
two or Ihree quam of whey almo(\ tO
dlyoefs in a
ballJ,um ma,i", :
aod dillillhe extraCl or re–
fiduum in a reto
n
fet io a reverberaling furnace, wilh
degrees of fi re, according
10
Ihe general rule. Al
~rll
fome phlegm will come over : lben a lemol\ coloured a–
cid (pirit: aod aflerwards a preny Ihick oil. Thm
will remain io lhe relon a charred matlCr, which beiog
expofed
10
lhe air grows moill. LixivialC il Wilh rain
waler, and evaporate lhe lixivium: il will yicld you ery–
{\als
of fea·fall. Dry the charred matICr, and burn il
io thc open air with a llrong fire, lill it be redueed inlo
aOles.
A
lixivium of lhe(e aOles will lllew fome tokens
of a 6xed alkali.
lt
will 'ppear, on examinin' Ihc Ihm analyfes of Ihe
Ihe fubnaocts whercof milk confins, Ihal nooe of Ihtm
yields a volatile alkali: which is worthy of ootice: as it
is Ihe only animal maner from wbich fuch a falt eao–
nOl be obtained.
!t
is true, the milk of animals
lhat feed on ,egelables may be confidered as ao (inter–
mediate liquor belween
v~gmble
and aoimal (ubnao–
ces;
as an imperfeCl animal.juice, whicb lIill retaios
much of the ,egelable nalure: and we ;aClually find,
thal milk almon alway' halh, at lean in pm , the
propenies of lhofe plants Wilh which the animals Ihat
yICIJ it are fed.
YeI,
as il cannot be formed in Ihe
body of the animal , Wilhoul mixing Wilh feveral of ilS
juices Ihal
are
endrely perfeCled, and become purcly ani–
lOal, it mua appear IIrange Ihal lhe aoalyfis lhereof
Olould nOI afford lhe lea(! ,emge of that principie,
which all olher animal-matters yield in lhe greatell
plenlY·
Thc reafon of lhis may be (ouod in Ihe ure to which
milk is dcllined.
!t
is iotended (or lhe nourilhmenl of
aoimals of lhe fame fpeeies Wil? Ihofe in whorc bodies
it is produced. Con(equendy
Il
ought as mueh as pof–
liblc
10
ref~mble
the juices of Ihe food which is proper
lor ¡hoCe animah. Now, as animal. mal Jivc ooly
00
s
T
Il
Y.
vegetables could nOl be properly nouriOled by animal
malltrs, (or which nalure it(dl" hath tven given lheman
3vedion, it is nOl furpriliog Ihat lhe milk ulluch animals
fhould be free Iromanymixlure of luch Ihiogs as
are
un–
fui table
10
the young ones whumil is deligncd tO oouriOl.
T here is rea(on Iherefore
10
lhink, Ihal nalure halh dir–
pored Ihe organs in which the fecreuon of milk is per–
furmed , (o as
10
fepu m il entirely from all Ihe animal
juices fi r(\ mixed wllh il: and lhis is Ihe principal dif.
ference belween milk and chyle; lhe laner beiog necef·
farily blcnded Wilh the fallva, Ihe ganric and paocrmic
juices, lhe bile and Iymph, of the aoimals io which il i,
formed. Hence il may be concluded, that, if a quanti–
Iy of chyle could be coHeCled (olÚcieol
10
enable us
10.;
n.lyfe it, Ihe analyfis Ihereof would differ from thal of
milk, in Ihis chleRy. thal il would yield a greal deal of
volalile alkali, of which milk, as halh beea C¿id, yidds
none at all.
The f¡me lhing probably takes place in carniloroos
animals.
lt
is cem in. Ihal lhore animals chu(e to eat
Ihe ReOIof fuch olhers only as (eed upon ,egmbles
i
and
that nOlhing bUI extreme hunger, and lhe abfolule want
of more agreeable food, will force lhem
10
eat
lhe Relh
o( other cami,orous anim. ls. Wolvts, which greedily
devour Iheep, gom, &C. Celdom cat foxes, cats, pole–
cars, &c. though Ihe(e animals are nOl IIrong eoough
10
refin Ihem. Foxes,cm ,and birds of prey, lhal make fueh
lerriblehavockamong wild·rowl, and olher fons of ¡¡ame,
do
001
devJlur ooe anolher. This being laiddowo, Ihere
is rea(on
10
lhink, Ihat Ihe milk of carnivorous animah is
romelhing of the nalure of Ihe flcOl of thofe animals
Ihat feed on vegm bles, and which Ihey chu(e
10
eal,
and nOI of the nm re of Iheir own fieOl: as lhe milk
of aoimals lhal (eed on vegmbles is aoalogous
10
lhe
juim of vegelables, and wheoanalyfed yields no volalile
alkali, Ihough every olher
pan
of Iheir hody does.
But whalever be lhe nalure of milk, aod of whalever
ingredien" it be formed, il always coolains the lhree fe–
veral (ubnances above mentioned : namely, the fal, or
huttery pan, properly fo caHed, lhe chetfy, and lhe fe·
rous part, Ihe lan of whieh we are now
10
examine. It
is, properly (peaking, Ihe phlegm of the milk, aod con.
fin, almoll emirely of waler. For Ihis reafon it is pro·
per
10
lefren Ihe quantilYthereof coofiderahly hy evapo–
ralion, fo lhat its olher principies, being concentrated
and broughl nearer together, may become much more
fenfiLle. There is no danger of lofing aoy efrential
pan of Ihe wheyin the evaporalioo, if it be performcd
io Ihe
haftuum ma,i..
wilh ruch a geode beal as may
carry off Ihe aqueous partS only: lhis gready Ibor·
tens Ihe aoalyfi" which will be exceeJiog loog aod
tedious if all lhe water be dinilled
011'
io clo(e I'ef-
Cds.
'
As whey is chiefly lhe aqueous pan of milk, as
faid above, it muf! conlain alllhe principies lhereof Ihat .
are
fol uble io \Vm r: Ihal is, ilS (aline and faponaceous
pans.· And aceurdingly lhe aoalyfis lhereof Ihews !Jlal
il conlains an oil, rendered pcrfcél ly faponaeeous by all
acid : Ihal is, made perfeélly ",irciblewilh . ater. This
qualily of Ihe oil conlained in whey appem from Ihe
perfcCl lraofpucDcy of mal liquor, which we koow is
thc