PRINTED FOR F. C. AND J. RIVINGTON, AND J. HATCHARD, NO. 190, PICCADILLY; 1812. ADVERTISEMENT. THE following Essay was originally inserted in the GUARDIAN of EDUCATION; but it was always the intention of the late Mrs. Trimmer to publish it separately, and with that view she was revising it just before her death. She had gone through the greatest part of it, and had made many considerable alterations and improvements; and if her life had been prolonged, would probably have made further additions. But though less perfect than it might |