MINERALOGY. 
255 
broken from the above-mentioned 
Fiell in Serna 
SECT. CCLXXVL 
S, Conglutinated ftones of granules or faiid$ 
of different kinds, Saxum conglutimtum gra- 
nulls feu arena variorum lapidum^ Sandftone, 
Lapis arenaceus. 
In this divifion are reckoned thofe which 
confift of fuch minute particles, that all 
of them cannot eafily be difcovered by the 
naked eye. The greateft part, however, 
confift of quartz and mica, which fub- 
ftances are the moft fit to be granulated, 
without being brought to a powder. 
I think I have reafon to conlider this kind 
in regard to the fubftance which, has ferved 
as a cement to combine them, although it 
is not always perfe<5lly difcernible. 
i. Cemented by clay. Lapis aremceus gh- 
tine argillaceo. 
^ The above-m rntioned Breccia? of themfelves maft demand 
the diilindioas here made between them, bat which perhaps 
may feem to be carried too far, fince tiieir particles are fo 
big and plain, as to be eafily known from one another. 
Thefe ftones are a proof both of the fubverftons which the 
mountains in many centuries have undergone, and of ifbme 
hidden means which Nature makes ufe of in thus cemendng 
different kinds of llones together. Any certain bignefs for the 
kernels or lumps in fuch compoundsj before they deferve the 
.name of Breccia, cannot be determined, becaufe that depends 
on a companfon, which every one is at liberty to imagine. 
At one place ia the mountain called Hykieberget, the kernels 
of porphyry have a diameter of fix feet, while in other places 
they are not bigger than walnuts. At Maffewala the kernels 
have a progreffive fize down to that of a fine fandftone. Moft: 
of this kind of lions is fit for ornaments, though the work- 
manfeip is very difficuk andcofily. 
I 
c. With 
