Manual of the Metalloids. By James Apjohn, M.D., F.R.S., Professor
of Chemistry in the University of Dublin. (Longman and Co.)—One of Messrs. Galbraith and Ilaughton's scientific manuals, and intended as a handbook in chemistry for students in medicine and engineering. It is certainly written with great clearness, and has some excellent illustra- tions to farther assist the reader. Dr. Apjohn's reputation as a chemist could not be raised by praise of ours.