NA TIONAL GEOGHA PUIC MA GA ZINE 



NATIONAL GEOGRAPHIC MONOGRAPHS 



Ou tl.e PHYSICAL Features of the Earth's Si-rface, designed especially to supply to leachers nnd 

 students of geography fresh and interesting material with which to supplement the reR.iIin l.-xt Ihh.V; 



LIST OF MONOGRAPHS COMPRISING VOLUMK I: 



General Physiographic Processes 



General Physiographic Features i-J. W. Powell 



Physiographic Regions of the United States - . . j 

 Beaches and Tidal Marshes of the Atlantic Coast Proi. N. S. Shaler 

 Present and Extinct Lakes of Nevada .... i^of. I. C. Russell 

 Appalachian Mountains— Northern Section . - . nailey Willis 

 Appalachian Mountains— Southern Section . - . c. Willard Hayes 

 Mt. Shasta— a Typical Extinct Volcano . - . . J. S. Diller 



The New England Plateau Prof. W. M. Davis 



Niagara Falls and Its History G. K. Gilbert 



Price for one set of ten monographs, $1.50. Five sets to one address, $6.00. Single monographs, aoc. 



RemUwUhorderto J!^MER\CAN BOOK COMPANY, 



IMev\/^ YorPc - Cincinnati Chicago 



Ripans Tabules assist digestion. 



Terrestrial Magnetism 



An International Quarterly Journal 



Edited by L. A. BAUER 

 With the Co==operation of Eminent Magneticians 



WITH the March, 1897, issue, this Journal, devoted exclusively to Terrestrial MaKuetism and allied 

 sulyects, such as Earth Currents, Auroras, Atmospheric Electricity, etc., entered on its second 

 volume. The heartj' co-operation extended by the workers in this promising field o( investigation, as 

 abundantly shown by the numbers thus far issued, has made this Journal tlie international organ for 

 making known the latest achievements. The magnetic needle has become such a promising instrument 

 of research, not only in terrestrial, but in cosmical physics, that this Journal a])peals to a large class of 

 investigators. The geographer, the geologist, the astronomer, the meteorologist — all are interested in 

 the development of the subject of terrestrial magnetism. It should therefore receive their .supi>ort. 



Among the contributors of the main articles in the past have been Messrs. Barus, Borgen. Chrec, 

 Eschenhagen, Littlehales, Riicker, Schmidt, Schuster, and de Tillo. 



Future numbers will contain : 



♦•The Earth, a Great Magnet," 



By Dr. J. A. FLEMING. 



"The Electrification of the Atmosphere," 



By Prof. ALE-XANUER McADIE. 



♦♦The Height of the Aurora," 



By Prof. CLEVEL.VND .VHHH. 



♦♦The Distribution of Magnetic Observatories," 



(Illustrated), 



By Prof. MAX ESCHENHAGEN, 



etc., etc. 



The size of the Journal is royal octavo, a volume embracing about 200 pages. Domestic subscription 

 price: Two dollars ; single numbers, fifty cents. I'oreigu suliscription price: Nine shilling.s, nine 



marks, or eleven francs. Address : 



-TERRESTRIAL. fS/J AG M EXI S IVl, 



The University of Cincinnati, Cincinnati, Ohio. 



