Now, carbonate of lime is soluble in water containing free or uncombined carbon dioxid, but is precipitated whenever the latter is withdrawn.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Put the contents into an evaporating-dish, and look for any uncombined iron or sulphur.
"An Introduction to Chemical Science"
R.P. Williams
It occurs uncombined in coal-mines, and some other places, but the readiness with which it unites with other elements, particularly O, prevents its accumulation in large quantities.
"An Introduction to Chemical Science"
R.P. Williams