Our great lexicographer, in his celebrated eulogium on Dr. Watts, thus speaks in commendation of those productions which he so successfully penned for the pleasure and instruction of the juvenile portion of the community. 'For children, ' says Dr. Johnson, 'he condescended to lay aside the philosopher, the scholar, and the wit, to write little poems of devotion, and systems of instruction adapted to their wants and capacities, from the dawn of reason to its gradation of advance in the morning of life. Every man acquainted with the common principles of human action will look with veneration on the writer who is at one time combating Locke and at another time making a catechism for children in their fourth year. A voluntary descent from the dignity of science is perhaps the hardest lesson which humility can teach.