^{page 301 note *} I Made use of small quantities only of the zeolite in all these experiments; because, as the specimen appears to be the only one of the kind which has been found, I wished to preserve as much of it entire as possible.

^{page 302 note *} The experiments which, shewed that soda, was the alkaline basis of this salt, have not been stated here; because I formerly gave a description of the methods used in examining the same salt, in the paper on Whinstone and Lava, published in Part I. of this volume, (p. 85.). To avoid unnecessary repetition, I beg leave to refer to that paper, both with regard to the manner in which. I endeavoured to determine the purity of the saline matter, and also that of the filex, and fome other earths.

^{page 303 note *} Voyages dans les Alpes, 1923.

^{page 303 note †} Kirwan's Mineralogy, vol. 1. p. 278, Traité de Mineralogie par Hauy, tom. 3. p. 151 and 227.