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These Works are in such general demand, that the Sale has already reached considerably upwards of ONE-AND-A-HALF MILLION VOLUMES. The attention of all parties interested in the dissemination of sound Theoretical Instruction and Practical Knowledge is particularly directed to the Twenty-seven Volumes in this Series of Popular and Valuable Books. 1-3. "DAILY WANTS, THE DICTIONARY OF," containing nearly 1,200 pages of Information upon all matters of Practical and Domestic Utility. Above 118,000 copies have been sold. 4-7. "USEFUL KNOWLEDGE, THE DICTIONARY OF," a Book of Reference upon History, Geography, Science, Statistics, &c. A Companion Work to the "Dictionary of Daily Wants." 8 & 9. "MEDICAL AND SURGICAL KNOWLEDGE, THE DICTIONARY OF," a Complete Practical Guide on Health and Disease, for Families, Emigrants, and Colonists.