The S^tural HiJlorJ 
time, ai*e thus at length fix'd into a friable kind of ftone^ by the 
petrifying fleam that comes from the earth ; or elfe they are eocfu- 
ddticns out of the ftones themfelves, whence are formed thofe ex- 
crefcencks\\kcvpartsmAnhnah\ neither of which feem unagree- 
able to their defcription in Tab, 3. Fig, 8^ 
48. But befide the Stalagmitesy there are other concretions made 
of much the fame materials, z//:^. of a cold fort of TP^/tT, thick- 
ned with ^errewe zr\& petrifying particles; which yet becaufe of 
their different mode of generation, have obtained a different, 
and more fuitable name : And fuch are the fiones made of nothing 
but fuch water-, as it drops from the roofs and caverns of the 
Rocks, and therefore called Stalactites, or La fides fdllatitii ; 
which, if the drops defcend by the fides of the Rocks, and com- 
ply with the ufual raggednefs of them, are then indeed of vari- 
ous and the rudeft forms, and by the work-men called Craume 
But if the drops defcend from the top of a vault, or any more 
prominent part of a Rock, in a dired line and free from the 
fides, they are commonly then of z pyramidal form, in Tab,"^, 
Fig, 9. which is the reprefentation of a Jione of about nine incbes 
long, of a yellowiHi colour, as it hung from the Rock in Hed^ 
dington Quarry, where without doubt it was produced much af- 
ter the fame manner, as Ificles at the ends of fpouts in Winter, by 
a gradual defcent and congelation of the drops. 
49. Hither alfo muft be referred all forts of Spars^ by the 
Miners called Cawke^ and the Latins^ Fluores ; which (fay they) 
yet retain fo much of a fluid., that with the heat of fire^ like Ice 
in thtSun., they melt and flow : an effed, which though I could 
not find it had upon ours without the help of Salts ; yet not 
doubting at all, but that once they had been fluids., I could not 
but accordingly give them place here. 
5 o. Whereof, there is fcarce any Rock whatever, whether 
metalline ox vulgar^ which hasnotfome kind or other of them, 
fliot in its feams or other hollows, which according to their diffe- 
rent fubjefts or matrixes., are fomtimes of different colours., and 
frequently of diwGxs figures, 
51. As for colours , I have not obferved above two forts in 
Oxford-JInre., a light yellow, and a Pearl-colour 'd white, where- 
y Of this there is a Quarry between Heathro^ and Enfion, called Eroad-Jfone Quarry> that has great 
plenty. 
of 
