APPLETON, Daniel, the founder of the publishing house of D. Appleton and company, in New York, born in Haverhill, Mass., Dec. 10, 1785, died March 27, 1849. He commenced business as a retail trader in his native place. He afterward removed to a larger business field in Boston, and subsequently to New York. In the latter place he commenced the importation of English books, and in the course of years, by his energy of character, established one of the largest importing and publishing houses in the United States, which is now continued by his sons.