THE faults into which the writer of a text-book of organic chemistry for students is apt to be led are, as Dr. Morley points out in his preface, that of overelaboration on the one hand, to which the material too readily lends itself, and that of unintelligent abridgment on the other. Dr. Morley adopts a satisfactory compromise by selecting for treatment a relatively small number of typical compounds, giving, however, “as much consideration to each compound as it would receive in a large treatise.” Some departures from this rule are, as he candidly confesses, due to the necessity of taking into account “the requirements of students working for examinations.” Outlines of Organic chemistry. By H. Forster Morley. (London: J. and A. Churchill, 1886.)