708 



SCIENCE. 



[N. S. Vol. II. No. 47. 



drainage lines in the north part of the Missis- 

 sippi basin, in the hope that such facts may 

 lead to inferences concerning the preglacial alti- 

 tude of the region, differential crust movements, 

 the effect of glaciation in enlarging and deepen- 

 ing valleys and other questions relating to 

 glacial influence. 



The Classification of the Upper Paleozoic Socks 

 of Central Kansas : By Chas. S. Prosser. This 

 is the concluding portion of the paper begun in 

 the last number of the Journal. It gives a de- 

 tailed study of the paleozoic series from the 

 Waubansee beds of the author in the U. Coal 

 Measures to the Marion beds in the Permian. 

 The paper is a valuable contribution to the 

 stratigraphy of Kansas and its value is enhanced 

 by the table of formations accompanying. 



The Volcanics of the Michigamme District of 

 Michigan : By J. Morgan Clements. These 

 rocks are Huronian in age and lie to the west 

 of the Archean core between Bone Lake on the 

 north and Crystal Falls on the south. They 

 have a thickness of about 4,000 feet and vary in 

 character from melaphyre and porphyrite to 

 quartz-porphyry and devitrifled rhyolites called 

 aporhyolites. As a result of his study of this 

 series, the author confirms the conclusions of 

 many late investigators regarding the identity 

 of these older volcanics with modern lavas and 

 proposes to name them accordingly. . 



The Influence of Debris on the Flow of Glaciers : 

 By Israel C. Russell. The principle main- 

 tained is that the flow of a glacier under given 

 conditions will depend on the percentage of 

 debris mingled with it and will be least when 

 that percentage is greatest. This principle is 

 applied in explaining the irregularities of glacial 

 erosion and deposition, such as subglacial gravel 

 deposits, the formation of complex terminal 

 moraines and the difficult subject, the origin of 

 drumlins. He sees no good reason why we may 

 not have drumlins of sand, loess or gravel, as 

 well as till. 



Glacial Studies in Greenland No. VIII: By T. 

 C. Chamberlin. This is mainly a description 

 of the krakokta glacier which descends northerly 

 from the Redcliff' peninsula. The relations of 

 this glacier to its moraine are followed with 

 some detail. Where it meets the Tuktoo glacier 

 moving southward, a joint moraine is produced. 



which perhaps is medial in position, but terminal 

 in nature. At some places the ice lies well 

 within its moraine, and at others the moraine 

 is completely overridden by recent advances of 

 the ice. The photographs illustrate these points 

 as well as the regular and beautiful stratification 

 of the glacier and its ft'eedom from debris, ex- 

 cept in the lower portion. 



The Editorial : By R. D. Salisbury gives a 

 condensed account of the Peary Relief Expedi- 

 tion of the present summer, and of the results, 

 geological and otherwise, of Mr. Peary's work 

 during two seasons in Greenland. 



Reviews are contributed by J. P. Iddings, T. 

 W. Stanton, S. Weller and T. C. Hopkins. 



NEW BOOKS. 

 Die Arthidung tmd Verwandtschaft bei bei den 



Schmetterlingen (Part 2). Dr. G. H. The- 



ODOR EiMER. Jena, Gustav Fischer. 1895. 



Pp. 153. 

 A Handbook of British Lepidoptera. Ebward 



Meyrick. London and New York, Macmil- 



lan&Co. Pp. vi.-f843. $325. 

 Notes on the Nebular Theory. William Ford 



Stanley, London, Kegan Paul, Trench, 



Triibner & Co., Ltd. 1895. Pp. xv. + 259. 

 Problems in Differential Calculus. W. E. By- 



EEly. Boston and London, Ginn & Co. 1895. 



Pp. vii + 71. 

 The Production of Iron Ores in Va)-ioiis Parts of 



the World. John Birkenbine. Wasliington. 



1895. Pp. 204. 

 A Handbook of Industrial Organic Chemistry. 



Samuel P. Sadtler. Second Edition. Phila- 

 delphia and London, J. B. Lippincott & Co. 



1895. Pp. xvii+537. 

 The Structure and Development of il/o.sses and 



Ferns. Douglas Houghton Campbell. 



London and New York, Macmillan & Co. 



1895. Pp. viii-t-554. $4.-50. 

 Laboratory Manual of Inorganic Preparations. 



By H. T. Vult]': and Geo. M. S. Neustadt. 



New York, Geo. Gottsberger Peck. 1895. 



Pp. ii+180+iii. $2. 

 Indianische Sagen von der Nord-Pacifischcii Kiislc 



Amerikas. Franz Boas. Berlin, A. Asker 



&Co. 1895. Pp. vi 4- 363. 



