Allen's commercial organic analysis. A treatise on the properties, modes of analysis and proximate analytical examination of the various organic chemicals and products employed in the arts, manufactures, medicine, etc., with concise methods for the detection and estimate of their improprieties, filtrations and products of decomposition. Volume VIII, Editor, C. Ainsworth Mitchell, of the Analyst. Publishers, P. Blakiston's Son & Co., Inc., Philadelphia, Pa. Price $7.50