29 APRIL 1865, Page 19

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.