Algebra: an elementary text-book for the higher classes of secondary schools and for colleges. I have given the title in full, but the book is always known as Chrystal, after its author, G. Chrystal, who, publishing first in 1886, would have been delighted to see this Seventh Edition (1964) by the Chelsea Publishing Company of New York in two volumes, at $2.35 each paper-bound or $3.95 “handsomely cloth bound.”