Bone-ash
a white ash obtained by calcining bones, used as a fertilizer and in the making of bone china.
Historical Examples
Manures and the principles of manuring Charles Morton Aikman
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 3 Various
The Silversmith’s Handbook George E. Gee
A Textbook of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer and John Jacob Beringer
Elements of Agricultural Chemistry Thomas Anderson
A Textbook of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer and John Jacob Beringer
A Dictionary of Arts, Manufactures and Mines Andrew Ure
Elements of Agricultural Chemistry Thomas Anderson
Manures and the principles of manuring Charles Morton Aikman
noun
the residue obtained when bones are burned in air, consisting mainly of calcium phosphate. It is used as a fertilizer and in the manufacture of bone china
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