These latter are for the most part Crystallizable substances of organic origin, such as sugars, urea, etc.
"The Mechanism of Life"
Stéphane Leduc
In 1747, Herr Marggraf, of the Academy of Sciences, in Berlin, discovered the existence of Crystallizable sugar in the juice of the beet and other roots.
"Cuba, Old and New"
Albert Gardner Robinson
So, sometimes by water, sometimes by vapor, sometimes nobody knows how, Crystallizable matter is brought from somewhere, and fastens itself in these open spaces, so as to bind the rock together again with crystal cement.
"The Ethics of the Dust"
John Ruskin