In the German universities an extensive branch of lectures is formed by the _Encyclopædias_ of the various sciences. Encyclopædia originally implied the complete course or circle of a liberal education in science and art, as pursued by the young men of Greece; namely, gymnastics, a cultivated taste for their own classics, music, arithmetic, and geometry. European writers give the name of _encyclopædia_, in the widest scientific sense, to the whole round or empire of human knowledge, arranged in systematic or alphabetic order; whereas the Greek imports but practical school knowledge. The literature of the former is voluminous beyond description, it having been cultivated from the beginning of the middle ages to the present day. Different from either of them is the _encyclopædia_ of the German universities; this is an introduction into the several arts and sciences, showing the nature of each, its extent, utility, relation to other studies and to practical life, the best method of pursuing it, and the sources from whence the knowledge of it is to be derived. An introduction of this compass is, however, with greater propriety styled _encyclopædia and methodology_. Thus, we hear of separate lectures on encyclopædias and methodologies of divinity, jurisprudence, medicine, philosophy, mathematical sciences, physical science, the fine arts, and philology. Manuals and lectures of this kind are exceedingly useful for those who are commencing a course of professional study. For "the best way to learn any science," says Watts, "is to begin with a regular system, or a short and plain scheme of that science, well drawn up into a narrow compass."--_Ibid._ * * * * * PERSIAN CAVALIER.