Summary of Content: 12 mo. 248, ,; 272, iv; 285, ii pp. with 24 engraved plates. Collateral to GLC 6572, although this 1819 edition printed by M. Carey and Son, is probably later than that used by Jefferson. Scarce. Title in full: ”Scientific dialogues, intended for the instruction and entertainment of young people: in which the first principles of natural and experimental philosophy are fully explained by J. Joyce.” v. 1. Of mechanics and astronomy -- v. 2. Of hydrostatics and pneumatics -- v. 3. Of optics, magnetism, electricity, and galvanism. American Imprints 48395, Shaw & Shoemaker 48395.