Page:Roman History of Ammianus Marcellinus.djvu/10

end, and was continued to the death of Valens, a.d. 378, a period of 282 years. And there is probably no work as to the intrinsic value of which there is so little difference of opinion. Gibbon bears repeated testimony to his accuracy, fidelity, and impartiality, and quotes him extensively. In losing his aid after a.d. 378, he says, "It is not without sincere regret that I must now take leave of an accurate and faithful guide, who has composed the history of his own times without indulging the prejudices and passions which usually affect the mind of a contemporary." Professor Ramsay (in Smith's Dictionary of Greek and Roman Biography) says, "We are indebted to him for a knowledge of many important facts not elsewhere recorded, and for much valuable insight into the modes of thought and the general tone of public feeling prevalent in his day. Nearly all the statements admitted appear to be founded upon his own observations, or upon the information derived from trustworthy eye-witnesses. A considerable number of dissertations and digressions are introduced, many of them highly interesting and valuable. Such are his notices of the institutions and manners of the Saracens (xiv. 4), of the Scythians and Sarmatians (xvii. 12), of the Huns and Alani (xxxi. 2), of the Egyptians and their country (xxii. 6, 14–16), and his geographical discussions upon Gaul (xv. 9), the Pontus (xxii. 8), and Thrace (xxvii. 4). Less legitimate and less judicious are his geological speculations upon earthquakes (xvii. 7), his astronomical inquiries into eclipses (xx. 3), comets (xxv. 10), and the regulation of the calendar (xxvi. 1); his medical researches into the origin of epidemics (xix. 4); his zoological theory on the destruction of lions by mosquitos (xviii. 7), and his horticultural essay on the impregnation of palms (xxiv. 3). In addition to industry in research and honesty of purpose, he was gifted with a large measure of strong common sense, which enabled him in many points to rise superior to the prejudices of his day, and with a clear-sighted independence