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for the normal and acid sodium carbonates, which are repeatedly given incorrectly. The author apparently wrote his book hastily, and revised the text, if at all, very carelessly. We find some statements in the book with which we do not agree. For example, we do not consider the volumetric estimation of chlorine, by means of mercuric nitrate, simpler and more reliable than the estimation hy means of silver nitrate. His directions for the preliminary examination of the tissues for morphia anddoi:10.1056/nejm188407031110105 fatcat:6rr7xnjbjrfnbbpulzl5givgea