to each compound belongs a surface

*

Fig. 11. Photograph of the solid T-X Model.

Fig. 12. Photograph of the solid P-X model.

(squared, minus captions within image)

illustrating George W. Morey. “The Ternary System H_{2}0-K_{2}Si0_{3}-Si0_{2}.” (Microscopic study by C. N. Fenner.) *Journal of the American Chemical Society* 39:6 (June 1917) : 1173-1229

Stanford copy, no date of digitization

—

“To each compound belongs a surface, and, as before, intersection of two surfaces gives a boundary curve, of three surfaces, an invariant point. On account of the extreme range of pressure in this system, it was necessary to use a variable scale.”

p 1222

tags:

curves; variables; reduction of variables; solids; surfaces

G. W. Morey, C. N. Fenner, “The Ternary System” (1917)