3 MARCH 1894, Page 26

The Engineer's Year - Book. By H. R. Kempe. (Crosby Lock- wood.)—This

Year-Book is a new publication. It contains " formulie, rules, tables, data, and memoranda in civil, mechanical, electrical, marine, and mine engineering." The enormous variety of facts brought. together in this volume quite defy description, not to speak of criticism. Glancing through its pages, we find a curious specimen which may be quoted. A powerful human voice, when there is no wind, can reach 460 ft. ; "with a barely observable breeze," it goes three miles.