Price 2s.6d.; Abroad 3s. Strictly Net.
GLUE AND GLUE-TESTING.
By SAMUEL RIDEAL, D.Sc. Lond.
14 Illustrations. 144 Pages. Demy 8vo. 1900.
Price 10s.6d.; India and British Colonies, 11s.;
Other Countries, 12s. Strictly Net.
SEALING-WAXES, WAFERS, AND OTHER ADHESIVES