Note G — MEMOIR OF WILLIAM HALLOWES MILLER.
Reading edition
For example, the native crystals of sulphur have a : b : c = 1 : 2·340 : 1·233.
Crystals of gypsum havea : b : c = 1 : 0·413 : 0·691.
Crystals of tin-stone havea : b : c = 1 : 1 : 0·6724.
And crystals of common salt havea : b : c = 1 : 1 : 1.