Page:Transactions of the Geological Society, 1st series, vol. 2.djvu/355

Rh accompanied by chalcedony from Pednandrae. In searching the heaps of that mine for the chlorophane, I found several varieties of remarkably compact fluor —also enclosing crystals of oxyd of tin, or accompanied by them.

The science of mineralogy is so intimately connected with some branches of the mathematics, that he who pretends to the former, unassisted by a knowledge of the latter, may perhaps be considered as pursuing it rather as an amusement, than as an object of scientific research. I confess myself to be exactly so circumstanced. The want of an attachment to the study of the mathematics, led me to

Rh