Paper, 'On the part which the silicates of the alkalies may play in the metamorphism of rocks' by Thomas Sterry Hunt Hunt expands on previous research into the reaction between the siliceous matters and the carbonates of lime, magnesia, and iron of the sedimentary deposits, which has given rise to the serpentines, talcs, pyroxenites, chlorites, and garnet rocks of the Green Mountains in Canada. He briefly describes the results of several experiments using purified quartz to find soluble silica. Subject: Geology / Chemistry / Mineralogy Received 30 March 1857. Communicated by Thomas Graham. A version of this paper was published in volume 8 of the Proceedings of the Royal Society as 'On the part which the silicates of the alkalies may play in the metamorphism of rocks'. 1857