This division of the work comprises those chemical compounds which are employed for other purposes than those of medicine, and which have not been noticed in the former parts of this volume. It includes a variety of miscellaneous articles which are sometimes sold by the retail druggist, or the materials of which he is expected to furnish, or with the composition of which it is desirable he should be acquainted. The limits of the work do not admit of a minute description of the processes and manipulations employed in the manufacture of such chemicals as are only made on the large scale, and never by the retailer; nor of those chemical arts which have no immediate connection with the trade.