1. Bell, P. M., G. Simmons, and J. F. Hays: Shearing squeezer experiments with quartz and coesite. Carnegie Inst. Wash. Year Bk. 64, 141?144 (1965).
2. Birch, F., and P. Lecomte: Temperature-pressure plane for albite composition. Am. J. Sci. 258, 209?217 (1960).
3. Boettcher, A. L., and P. J. Wyllie: Hydrothermal melting reactions in the system NaAlSiO4-SiO2-H2O at pressure above 10 kbs: Jadeite stability. Program Ann. Meeting Geol. Soc. Am. 1967, 17 (1967).
4. - - The calcite-aragonite transition measured in the system CaO-CO2-H2O. J. Geol. (in press) (1968).
5. Boyd, F. R.: Geological aspects of high-pressure research. Science 145, 13?20 (1964).