Note 1644 — BOOK XXXIV. THE NATURAL HISTORY OF METALS.
John Bostock translation
It is difficult to ascertain the exact nature of the substances treated of in this Chapter. Ajasson has some judicious remarks upon them, in which he points out what appear to be inconsistencies in the account given of them, and of their relation to each other.—B. Ajasson says that there is no doubt that a mammose or terreous carbonate of copper is meant under these names. These substances are no longer known, but our tutty, or impure oxide of zinc, bears some resemblance to them.