between what? has-been .Mnfoted’fTfrMh wh&ib&s perpetually kepi One
aaad .the fame fktiom;5 :tb&'karu, fefefom
affords us any inftanees of alteration' of movement, fcut. every Ibofe
iMeonne&ed part o f the earth ’has been moved andfftifted; andforuf-
much as the tranfpofed bodies ate «found‘to b e Moved mor-four lefs,
farther dr lefs diftant from-their former bbdsj according to thefr*dwn
fpecific weight,r and frhe declination fof the plaite they moped- on, it
igsMie general perfua£c»>xff ievery
o f fituation can be owing to nothing bur-the force -of water^and o f
no other yvatfrrJtfo likqly as tfe»t o f the univerfal ;*dd»g^aieiheie
are .we to think this lefi the voice-of truths beeidi^h is fo Gpmtoon
an opinion; for indeed the caufe fpeafcs fo much for itfdf,' that
in order to confirm the - juftnefs of this rfeafoning, there remains
n otin g more IO do, than to point out A e ebflreijsojsdence a fe oir--
cumftantial agreement betwixt this afligned caufe, and each particular
pflfed and property mentioned before.
Firft then, In low and level grounds the broil i§ greater inquan-
tity and lefs disturbed than on the tops or fides of hills, as being
but juft moved from its firft fcttlement by thevaciijatingwaters o f
die deluge ofi a plane furface; whereas on a declivity, and a more
expofed fituation, the waters had more power to agitate and di£-'
perfe, and confequently the original covering o f the lode is Much
leffened in quantity.
Secondly, The gravitation of thefe ftottes («iiafty ifojmjgnatecl
with metal) will, when moved with water, make iherp'-diefcend
a fteep hill quicker than down a more eafy dqfcent, in the fame
proportion as bodies moved on inelined planes,: their Velocity being
in proportion to their own weight,- the declivity- oh which they
move, 'and the impediments they meet with there; but the quicker
they defeend, the foonqr they get at «eft, and fix by immerging
themfelvcs in the ftiff clay and rubble, and vice verjd.
T hirdly, The ftnaller fhodes were moved to and fro eafily aiid
frequently, and confequently much difperfed; whereas the greater
and weightier the fhodes were, the more they refilled the agitation
of the waters, and were lefs removed.
Fourthly, The fmaller fhodes are ufhally found in and near the
furface, being wafhed downwards, till, by the refiftance of the
ground on which they are fpread, they are forced: out like the rills
of brooks into open day, whilft the larger, by their fuperiour
weight, reft deeper interred, and nearer the lode.
Fifthly, The more diftant fhodes are found from the lode, the
more they were difperfed by the water, and confequently became
fewer in number in any equal fpace, like diverging rays; and the
nearer to the lode, the thicker and more frequent they remain for
the fame reafon. See PI. XVII. Fig. yin. Sixthly,
Sixthly, That the angles of thefe flones are blunted, proceeds
jöVidently from the agitation of ^vater, and .they Me Fmóothed in
iproportion to the ;diftan<ste they havfr.freen rolled*;. and had theforde
^ftntinued a fufftoiesifit while, thefe ftories- wbuld have been as round
,as, the pebbles on- the fea-fhore; but the farther we find them from
2th e lode*,Ï the. More. i trituration^ they, have* ‘Undergone, and vUef
It may bq here, f e l t e d , that i f the delt^e fmoothed off the
angles of thefej.fhodes, why had it not the faöle -èffeft ^ o n the
loofe. parts of. die killas, granite, marble, and Other floiies^ with
which thefe fhodes are. intermixed^ iThetreafon Teems to be this»:
The long, flattifh,- light, and fhatp-attgled -parts toC the broil continued
their former fituation on the top of the lode; they could
not but wafhed, yet they Wèïè ’'iM'detachèd:* thtoil^paftibfrly
o f the broil whichdwëmftöny uoiffoes, impregnated With metals
dnd minerals, upon^ every agitation rolled, and fell with frS-ces: in
proportion to their weight; whereas lighter Md flattif ftt$i#*M4ved.
with lefs violence, and foffered little as to their extremities. . This
waê the cafe in general; but where declivities were lofrgvrathët than
fteep, and many little vallies concurred and difeharged their contents,
: thife, the force o f the waters being inOtesfed, not Only the
tin-fhodes are much roimded, but thb ^an'ite gfid killas frödulëS:;
and every ki&d of ftone, from a foot diametefaind under, is rounded
into a pebble-like form, a$well as the t in ,'Ss ^ y é f t e may -fatisfy
himfelf by obfefvingythe Brat a of rounded ftones in. the ftream-
works of Auftel moor. SEhodes therefore are not always mlfafiic; É
they are fometimes barren. One thing moré may be here obferved; ;
which is; that the broil is feldom fb well impregnated aS the lode f
underneath; the reafon I take to be this: The broil, being Mofe
loofe and fhattery than the lode, has had much of its tin wafhed
away by floods,': whereas the metal o f the lbde lay more fecure
from fueh diffrpatiom iAgain: T?he hefeg in pofttiouabot^è
the walls of the fiflures, had no depth of firatum to draw the metallic
particles from, hadmo chinks or> -colktjaMft-
waters to communicate the treafiires of the aidjoining ftrata, fro#
fiffure to lodge and detain them: < this is abb die reafon that the
upper parts of the lode itfelf are feldom fo well impregnated ats thofe
parts which lie deeper in the fame vein, infomuch, that it is a éom-
mon rule with the miners to fink upon lodes which are poor, it
being generally found, that lodes prove richer in depth, than near
the furface*
From t h e top or broil, let us d e fe e n d , and take-n o t ic e o f th e s e c t . v .
moft remarkable properties o f th e body of the lode. or ase body
r r V oS the lode.
The