Most eyestones are a calcareous deposit, found in the shell of the common European crawfish.
Everywhere was the universal whiteness of the calcareous deposit.
The relative position of the calcareous, lead-bearing stratum, had everywhere been the same, when not disturbed or displaced.
The burrows are about an inch deep, and are lined with a calcareous deposit.
These rocks are succeeded by thin arenaceous and calcareous beds which represent either the Solva or Menevian beds of Wales.
The lowest of the calcareous strata are thin, and alternate with shale.
The calcareous rock is taken in large quantities to Funchal, to be burnt into lime for building purposes.
Its roots are abundant, and it will grow well in calcareous soils (see Fig. 10).
The calcareous bitumen which it yields contains 20% of nearly pure bitumen, and 80% of carbonate of lime; and it has a sp.
Ossicles: calcareous plates which cover the body and form the exoskeleton.
calcareous cal·car·e·ous (kāl-kâr'ē-əs)
Composed of, containing, or characteristic of calcium carbonate, calcium, or limestone; chalky.