’Tis true, _Farnner_ did not mention this as a vendible, for it is not
worth purchasing with Money of him: for the common way of trying money
has been shewn not only by many provers of Metals, as _Lazarus Ercher_,
_George Agricola_, and many others, but I my self also in many places
of my Writings, and especially in my explication of the Wonder of the
World, have fully and exactly taught it, which _Farnner_ can never be
able to mend nor imitate.