MrcrocRmisit aay 94 
fall parcel of matter is able to tinge and:diffut it {elf over.a very, great 
antity of the fluid difiolvent 5, or fomewhat, after. that ane at 
foadk; and fach’ lke minute bodies, oF fteams, are qblery’d to tinge a 
very get gua of i coly cis auld die 8 on 
propriety, arid that i 9 perpetuity oF continuance inthat {tae of tony 
pattie and, manner of the ais being dilely'd by this Aiad or cesben 
And this Similitude will fuxther hold inthefe propricties,. that as thofe 
tines may be inereafed by, certain bodies,fo. may they be precipi i 
by: others; as I fhall afterwards thew it to be.very probable, that a e 
accidents happen even tothe Air it felt 115 fittv b's ie 41 9 ile} 
-loFurther; as thefe folutions and) tinctures do. alterithe nature of th ra 
fuid bodies.asto their aprnels to propagate a motion or impull¢ through 
them, even.fo does the particles of the Air, Water, | is i id bo- 
dies, and of Glafs, Cryftal, &e, which are commixt with this bulk of the 
Hiker, alterthe motion of the propagated poll flight ;, that is, where 
thefe more bulkie particles are rhore plentifull, and confequently alelte 
quantity of the Zther between them to be miov'd,there the motion ott 
nace far fe the Avuifeer thoush nr fo, rabulty which iil prodeeethole 
effects, which I have Phopes with fome probability, afcribed to itin 
the digreflion about Colours,'at the end of the Obreations on iu 
_.Now, that othet Stones, and thofe yrhich have the clofeft and hardeff _ 
textures, and feem “(as far as we aré ‘able to difeover with otif eyes, 
though help'd with the beft Aéicrofcopes) freett frei pores, are bhotr 
with{tanding replenifh’d with them ; anInftance oy two will,T fuppofe, 
make more probable; its eames. 
OA ety Ciiidcand cntlaw'd piece of cleet white Déarble, if it-be! well 
polifh'd and glaz’d, has fo curioutly fgooth a furfans, thas tie balk ang 
molt poliih'd furface of any wrought-glafs, feems not to the paked eye, 
hor thtough a Adcrafcope; to be more 'fmooth, and léf porous. ‘And yet, 
oe fete body is replenil d sf abundance of pores, ffhink =— 
‘Mele tolowing Experiments will tu Per telal cur oath 
The firft io The ya take fuch a Wet, iad fora pretty while boy! 
it in Turpentine and Oy! of Turpentine, you fhall find that the ftone will 
be all imbu’d with it ; and whereas before it look’d more white,but more 
©pacous, now it will look more greafie, but be much more trant arent, 
‘and if you let it lie but'a little while, and then break off a part of it, you 
fhall find the unéuous body to have penetrated it so-fary aicieterinate 
“Aepth every way within the furface, Thismay be yet eafter try d with 8 
Plece of the famie Azarble, a little warm'd in the fire,and then alittle Pit 
or Tarr melted on the top of it; for we — ete by theis | eal 
‘ting themfelves into rhe invifible pores of the {tone, ting it WiER lo Diack 
a hue, that there can ie no further doube of the truth of a afieaion; 
nat it abounds with faiall imipergeptibleporess Oy 
Now, that other bostita will ali fink java Fhe Pores of Mare chides 
4niiygus, T have try d, and found, that fie Blue € ar on 
