them his sincere thanks. He would also express his obligations to the officers of numerous banks and mercantile houses, of the Mint, the Custom-House, and of various public and private establishments, for the opportunities afforded him of obtaining reliable information on many subjects of interest and value. Three large editions of the work having been exhausted within a few months, it has been carefully revised and considerably enlarged, and no effort has been spared to render it worthy of its very favorable reception. To those who have kindly favored him with their communications,-as invited in the first edition, the author tenders his thanks, and would here repeat that he will deem it a special favor if business men, teachers, and others, will communicate any suggestion, new or improved method of calculation, or useful information on business topics, that may add to its accuracy and completeness. **A Key to the Crittenden Commercial Arithmetic, for the use of Teachers only, has been prepared, and will be sent by mail, postpaid, on receipt of $1.00. |