D. APPLETON & CO.'S PUBLICATIONS, 

 The Ice Age in North America, 



AND ITS BEARINGS UPON THE ANTIQUITY OF MAN. By G. 

 FREDERICK WEIGHT, D. D., LL. D. With 148 Maps and Illustrations. 

 Third edition, containing Appendix on the "Probable Cause of Glacia- 

 tion," by WAEREN UPHAM, F. G. S. A., and Supplementary Notes. 8vo. 

 625 pages, and complete Index. Cloth, $5.00. 



"Prof. Wright's work is great enough to be called monumental. There is not a page 

 that is not instructive and suggestive. It is sure to make a reputation abroad as well as at 

 home for its distinguished author, as one of the most active and intelligent of the living 

 students of natural science and the special department of glacial action." Philadelphia 

 Bulletin. 



The Great Ice Age, 



AND ITS RELATION TO THE ANTIQUITY OF MAN. By JAMES 

 GEIKIE, F. R. S. E., of H. M. Geological Survey of Scotland. \\ ith Maps 

 and Illustrations. 12mo. Cloth, $2.50. 



A systematic account of the Glacial epoch in England and Scotland, with special 

 reference to its changes of climate. 



The Cause of an Ice Age. 



BY SIR ROBERT BALL, LL. D., F. R. S., Royal Astronomer of Ireland, 

 author of " Starland." The first volume in the MODERN SCIENCE SERIES, 

 edited by Sir JOHN LUBBOCK. 12mo. Cloth, $1.00. 



" An exceedingly bright and interesting discussion of some of the marvelous physical 

 revolutions of which our earth has been the scene. Of the various ages traced and located 

 by scientists, none is more interesting or can be more so than the Ice Age, and never have its 

 phenomena been more clearly and graphically described, or its causes more definitely located, 

 than in this thrillingly interesting volume." Boston Traveller. 



Town Geology. 



By the Rev. CHARLES KINGSLEY, F. L. S., F. G. S., Canon of Chester. 

 12mo. Cloth, $1.50. 



"I have tried rather to teach the method of geology than its facts ; to furnish the student 

 with a key to all geology ; rough indeed and rudimentary, but sure and sound enough, I 

 trust, to help him to unlock most geological problems which may meet him in any quarter of 

 the globe." From the Preface. 



An American Geological Railway Guide. 



Giving the Geological Formation along the Railroads, with Altitude above 

 Tide-water, Notes on Interesting Places on the Routes, and a Description 

 of each of the Formations. By JAMES MACFARLANE, Ph. D., and more 

 than Seventy-five Geologists. Second edition, 1890. 426 pages. 8vo. 

 Cloth, $2.50. 



" The idea is an original one, and its value is by no means confined to its originality. 

 The book does not confine itself to dry facts, but in a series of foot-notes gives a great deal 

 of information of general interest. The articles on the several States are by eminent scien- 

 tific authorities. Mr. Macfarlane has produced a very convenient and serviceable hand-book, 

 available alike to the practical geologist, to the student of that science, and to the intellient 

 traveler who would like to know the country through which he is passing." 

 Evening Transcript. 



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