Frothingham's clearness and subtlety of mind should have so failed in appreciating a quality which does not inculcate, but which _is_ love and respect for others. [10] "_The Spirit of the New Faith._ A Series of Sermons." By OCTAVIUS BROOKS FROTHINGHAM. 16mo, pp. 272. New York: G. P. Putnam's Sons. * * * * * Few persons are aware of the vast and varied range of duties which are connected with what is called, "for short," a geological and geographical survey of the Territories.[11] The second edition of the catalogue of publications made in connection with the survey, of which Dr. F. V. Hayden is director, enumerates forty-one publications issued within ten years, among which are annual reports of the work done since 1867, bulletins, the issue of which began in 1874, and important monographs on ancient and modern fauna and flora of the region examined. Dr. Hayden's own geological work is necessarily limited by his heavy duties as director of the whole survey, but his long study of the West gives him unusual qualifications for assembling and discussing the work of others. He has a minute description with map of the Upper Arkansas valley and its glaciation, and of the old lake system of the West. During the early portion of the Tertiary the whole country, "from the Arctic circle to the Isthmus of Darien," was occupied with lakes, some of which were immense in size. In after times thousands of small lakes took their place, and these have finally disappeared. Many of these were expansions of the rivers, like most modern lakes. The old valleys are now occupied by a diluvial deposit, the counterpart of the Loess of the Rhine, and almost the same in composition. The agricultural future of all that valley region is very promising, for from some mysterious cause, the rainfall seems to be increasing over the whole area. Buried trees of great size prove that Nebraska has not always been the grassy waste it now is, and the revolutions of nature may restore its forests. Mr. Aughey figures some arrow-heads which he found in this deposit fifteen and twenty feet from the top, and in such a position as to assure him of their true age. Leaving the admirable geological study of Dr. Peale, we come to Mr. Eudlich's examination of the San Juan mines. This is a kind of work which government explorers should do more of, though until the mines are worked deeper, the information obtained is not very full. The veins are reported to be probably of Cretaceous age, or they may date from the beginning of the Tertiary. Dr. Hayden reports that when the coming season's work is finished "the most rugged and mountainous portion of our continent" will have been surveyed. It is his intention to map it in an atlas of six sheets, each covering about 11,500 square miles. The cartographical work of the survey is excellent. This volume contains eighty-eight maps and views, executed in a most creditable manner.