1
It is wood petrified with calcareous earth, and mineralised with pyrites.
2
Feld-spar is a compound of siliceous, argillaceous, and calcareous earth, intimately united together.
3
Fluor acid which being washed away and meeting with calcareous earth produces fluor or cubic spar.
4
On a part of Flagstaff Hill there was a thin stratum of calcareous earth, in which shells are found.
5
Some springs deposit calcareous earth.
6
We have strata consolidated by calcareous spar, a thing perfectly distinguishable from the stalactical concretion of calcareous earth, in consequence of aqueous solution.
7
It must be evident that this is chalk; naturally a soft calcareous earth, but which may be also found consolidated in every different degree.
8
A sensible or considerable portion of calcareous earth, in the composition of clay, constitutes a marl, and a sufficient admixture of sand, a loam.
9
This curious fossil shews the transmutation of calcareous earth into siliceous, as much as the siliceous shells which abound in the cabinets of the curious.
10
Calcareous earths, stones, or rocks consist of lime, or pure calcareous earth, carbonic acid, and water.