4 JULY 1908, Page 35

Precious Stones. By W. Goodchild, M.B. (A. Constable and Co.

6s. net.)—" The different gem stones are here considered," says the author, "in a mineralogical sequence." This is a plan which is certainly scientific, though it produces an odd effect when on p. 146 we come to "Quartz," apparently as a precious stone, but read that "this mineral is more abundantly distributed in Natbre than any other." Several pages follow about forms of quarts which are not "precious," and we return to the subject proper on p. 152 when we reach "Amethyst." This, however, is

a matter of little moment. The book is full of information, and will be found useful gf a practical guide.