the expenses which I have here set down in my will, as it shall require to be expended. And when he has done this, then I will that he shall be discharged of all debts due from him to me or to my estate. And if any profit shall accrue to him in Chalcis, from property belonging to me, it shall be all his own. My executors, for all the duties provided for in this will, shall be Hipparchus, Neleus, Strato, Callinus, Demotimus, Callisthenes, and Ctesarchus. And this my will is copied out, and all the copies are sealed with the seal-ring of me, Theophrastus; one copy is in the hands of Hegesias the son of Hipparchus; the witnesses thereto are Callippus of Pallene, Philomelus of Euonymus, Lysander of Hybas, and Philion of Alopece. Another copy is deposited with Olympiodorus, and the witnesses are the same. A third copy is under the care of Adimantus, and it was conveyed to him by Androsthenes, his son. The witnesses to that copy are Arimnestus the son of Cleobulus, Lysistratus of Thasos, the son of Phidon; Strato of Lampsacus, the son of Arcesilaus; Thesippus of Cerami, the son of Thesippus; Dioscorides of the banks of the Cephisus, the son of Dionysius.—This was his will. XV. Some writers have stated that Erasistratus, the physician, was a pupil of his; and it is very likely. LIFE OF STRATO. I. Theophrastus was succeeded in the presidency of his school by Strato of Lampsacus, the son of Arcesilaus, of whom he had made mention in his will. II. He was a man of great eminence, surnamed the Natural Philosopher, from his surpassing all men in the diligence with which he applied himself to the investigation of matters of that nature. III. He was also the preceptor of Ptolemy Philadelphus, and received from him, as it is said, eighty talents; and he began to preside over the school, as Apollodorus tells us in his Chronicles, in the hundred and twenty-third olympiad, and continued in that post for eighteen years. IV. There are extant three books of his on Kingly Power; three on Justice; three on the Gods; three on Beginnings; and one on each of the subjects of Happiness, Philosophy, Manly Courage, the Vacuum, Heaven, Spirit, Human Nature, the Generation of Animals, Mixtures, Sleep, Dreams, Sight, Perception, Pleasure, Colours, Diseases, Judgments, Powers, Metallic Works, Hunger, and Dimness of Sight, Lightness and Heaviness, Enthusiasm, Pain, Nourishment and Growth, Animals whose Existence is Doubted, Fabulous Animals, Causes, a Solution of Doubts, a preface to Topics; there are, also, treatises on Contingencies, on the Definition, on the More and Less, on Injustice, on Former and Later, on the Prior Genus, on Property, on the Future. There are, also, two books called the Examination of Inventions; the Genuineness of the Commentaries attributed to him, is doubted. There is a volume of Epistles, which begins thus: “Strato wishes Arsinoe prosperity.”