Note on the Bhagavantam-Suranarayana method of enumerating the physical constants of crystals

A method alternative to that of Bhagavantam and Suryanarayana is given for enumerating, by group theory, the number of independent constants for any physical property of crystals in the 32 classes; the method consists of finding first the explicit form of the representation in question for the full group of all rotations and reflexions and then obtaining the form for the individual crystal classes by specialization.