g# The N A f rU f tA L H I S T O R ¥' ef: _ _
Minerdt^WdtWSyted* m
fbpil' refer' my Readdr|il flrffiV^ly pfrikukte* #o-:fe# %f on- thd
•R eader’slBatidnbe <tb annexe thefbllowin|^E!yperi went ti q
fhaH this S u fg e^ d J
H| OThe Firfb is jg|$!| tfcWi1 f Why' Q $kp I
give aeteldlcife;wlkif1 th d f e ^ ^ r r
?ad’ why mother Adid^tyMIhdtSdf. t e e See^hdsi|;,''f o iMIrate;
How by ;niixing- AtM^^with' tSbfe’ W^tei^h^fdfe'iydu ' pat
the: Galls-to ^dm] that then
thde Phasnomena we thu ft - prenAiid thefe jiyp o th efe^ fe^
t e a t Several of. theimmeral
fluid, perhapsfasneai itd^att Fqilih^riuiil ’iSS6Si
eafiiy he carieeiv'd5; Pet!that
JSody to ’em, muft udiyntlyf&iife fe Pre^dfefidnj; arid com
fequently ithefi gived FindSMe tothefe'WafersJ ‘hy '!iiii^iyi
ting their 'Pores, and fd in dififefdnV ‘ ASg-lds ’ trahfmitt&g
the Light,ciwhich niuft heeds ^introidttee^a^Diyerlify -bf'Go-
lo.hrs, wss, ApaleRed, ^gat, 'Violet'/ »Purple, ^b^fttdhfe
Red, according to theVh¥iou§ Propbrtioh§^6'f the,ffemem
impregnating the Wafer fi Hence therefore dt i^ h l i t t e e
Galls containing a volatile Acid; Or rather auftere, that'by
their hooked Particles’they ekfily cklp themfelves'
the mineral' Particles,1 and mull therefore (?k$ f^fcvfdent
from the Piemifes laid down) nece-flarily caule a precipitation
of the Mineral; Which I M il 'inbre fully iiluftrate,
by making it probable;! that the mineralterticles' are fuf-
pendedin the fluid in the manner tbditlJd; lt[i^0Blervab®
that the Earth over which thefd Springs run1 ip alw^y^ cover’d
with an which to
that the mineral to the fluid retains fo equal’a balance, that
the leaft motion' oceafions a reparation; and thence it is;
that in thofe placds Where they have their currents, they
conftantly! drop an Gere, and colour the- Earth as before
obferv’d.; a
r (the fecond Experiment is th is : I f before you put in the
Gall you add an Acid to the Water, as for example, Spirit
of
_ ^ ÿ A M ü 'Æ & iÈ É i ë h é s h i r e ; &c. ~ j ?
. ü^i0îtéï6TS"èt' 'M?phWpH^A&a\\ therin gibes'* little o f ! no
Tirsdlufe ft© the Water 1 àh4,'the Realbn I take'to>4è thlSj
the Acid you ïiiix? Wkh* i'whem^ifpbeifically heavier than
* _ either»-the mineral particles Or tlxeiflui'd; by their-rigid itt-
'fiexibfeiParticlês keep thb' Mineral pufpendetlp lb that cons
fequeûtly the'aèidiôf thcGairherng/vdlatileJ it' is -hot pôwèr-
ful enough to briaig ’em dotvn,. ’and’thphee it: isahat by this
nirdihodi they ufually hoVer'upon theBfurface;dflthé Water
in an assure rGloud, the MineraL as Veil’ as: thatcbeing i¥bla-
tilq?; whichiMbundaUtly-widenfl/^both' in the Bvapofa-
tion;of .thofe (Watdïs,' arnk’Uikewifovby Ixjfdfing' thenmtb
th^Sun,. whichkn.'twentyifo.ur Hours. make&thdm/infiprd,
and inrhat fpace o f time fo 'fequeftér dsr'ofj the .mineral Par-*
tides, : that i theft they’will- ino t> t yield any - 'Iméture.’with a
Gallyiorl ifnany, bu-t a faint bnfe : : Sèrvblàtile, is thë!Kit.Bqi
in th'oIè\’V^atëlsy}whichj no dqjubcïs carrÿ’d ofb bykhe 'Snh
phurl which frOm its Volatility’mightjulMyihe drawn-like
thé Statue tâ Mercury wing’dfand ftilli pointing Upwards. n%
: To thefe I thought necelfary tor add* the.foîlowing Ex.
përiihehfs; that I might dojuftice both to the^publicki
and jtb that moll Learned ahdkngenioü^G’entlematfiîz^rk
TçTiïntley o f Tnmley Elq^ who Gommiini/cate^theni üxfnêt
\n,xh£ Water'zt Burnley\in' Lanèajhïre: lie: has l obferv’d
the:following Phænomena: . Firfi^ ■ 'That if that Wafër- be
e x p o ^ tb the Air there wU;.Pubfide‘ m Scirlit Pediment1.
« ^eing a PhænomenohMievèr oblèfved beforehin: aiiy
W ^ M i% ^ / ^ . I :evef heard- ofll it may .thearefbre juftly
challenge^our Conje&ures.ahput it;. Ofiremd LhpiseSciffi^
ydiichare the ufual Hypoftaifes of,thole kind:'qfliWaters;
-it is maftrevident it con’d not be; the-dnelbeinghf aîîrellbivi
the other of a Greyiflr colour ; but tonne it leemsuto bed
Bitûilihjous exalted SulphttKazad thisrjwillanore^ully ap-
pearrW'hen .vve dome to exahtthe ks SaMÿ,df! which, it com
taihs Lhrpe differenfefpecies : Firfl:, A fmall prbportion o f
Natfbnj.oxyjF^yptian Nitteh IWhich ifîcxpbfedrto the Air
willl Ekd?that,. qr Saltiof Türtàr3 pèipdéliqfuiumf
ltrl will