INTRODUCTION, HYSICAL science must always hold an important place in the work of mental discipline and culture. It may do what no other pursuit can in forming habits of exact observation, comparison, classification, and analysis. Apart, therefore, from its practical uses, it is an essential branch of education. But, standing by itself, it is only a branch, and that not the highest. Wonderful as its methods and discoveries are, it does not undertake to comprehend or appreciate the highest laws of the universe, or to call into exercise man's highest qualities. The sense of right and wrong is as necessary in the investigation of morals as sight and touch are in our physical researches, and requires as keen an exercise |