Page:Theophrastus - History of Stones - Hill (1774).djvu/337



HEN my Notes on were mentioned Yeterday, ome objected to the Sapphire's being coloured by Particles of Copper, and eemed very firm in the Opinion, that that Gem owes its Dye to a Native Zaffer.

I am orry I have only Room to name Things in thoe Notes, without Opportunities of entering into a Detail of the Experiments. Thro' the Coure of thoe Notes I have not tied myelf down to the Sentiments of any particular Author, but have, as my own Experiments and Obervations directed, at Times agreed to, and in other Places diented from, the Opinions of the whole Number. And how I have ucceeded in this Example, the fairet Way of judging will be firt,