vices—yea, to that Great Deity and Prime Cause (which indeed was all things), _Noesis Noeseon_, “the Thought of Thoughts,” whom he discovered by irrefragable processes of logic, and in whom the philosophers believe privately, leaving Serapis to the women and the sailors? All they had to do was to follow in his steps; to take each of them a branch, of science or literature, or as many branches as one man conveniently can; and working them out on the approved methods, end in a few years, as Alexander did, by weeping on the utmost shore of creation that there are no more worlds left to conquer. Alas! the Muses are shy and wild; and though they will haunt, like skylarks, on the bleakest northern moor as cheerfully as on the sunny hills of Greece, and rise thence singing into the heaven of heavens, yet they are hard to tempt into a gilded cage, however amusingly made and plentifully stored with comforts. Royal societies, associations of savants, and the like, are good for many things, but not for the breeding of art and genius: for they are things which cannot be bred. Such institutions are excellent for physical science, when, as among us now, physical science is going on the right method: but where, as in Alexandria, it was going on an utterly wrong method, they stereotype the errors of the age, and invest them with the prestige of authority, and produce mere Sorbonnes, and schools of pedants. To literature, too, they do some good, that is, in a literary age—an age of reflection rather than of production, of antiquarian research, criticism, imitation, when book-making has become an easy and respectable pursuit for the many who cannot dig, and are ashamed to beg. And yet, by adding that same prestige of authority, not to mention of good society and Court favour, to the popular mania for literature, they help on the growing evil, and increase the multitude of prophets who prophesy out of their own heart and have seen nothing. And this was, it must be said, the outcome of all the Ptolemæan appliances. In Physics they did little. In Art nothing. In Metaphysics less than nothing. We will first examine, as the more pleasant spectacle of the two, that branch of thought in which some progress was really made, and in which the Ptolemaic schools helped forward the development of men who have become world-famous, and will remain so, I suppose, until the end of time. Four names at once attract us: Euclid, Aristarchus, Eratosthenes, Hipparchus. Archimedes, also, should be included in the list, for he was a pupil of the Alexandrian school, having studied (if Proclus is to be trusted) in Egypt, under Conon the Samian, during the reigns of two Ptolemies, Philadelphus and Euergetes.