NATIONAL GEOGRAPHIC MAGAZINE 



I 



NATIONAL GEOGRAPHIC MONOGRAPHS 



Ou the PHVSICA,. KKATURKSOK THE EARTH'S Si-RKACK, .lesiRne.l especially to supplv to teacher, and 

 students of geography fresh and interesting material with which to supplement the reRuln, ic.W.k 



LIST OF MONOGRAPHS COMPRISING VOI.rMK I: 



General Physiographic Processes 



General Physiographic Features Ij. W Powell 



Physiographic Regions of the United States - - .1 

 Beaches and Tidal Marshes of the Atlantic Coast Prot N S Shaler 

 Present and Extinct Lakes of Nevada - - . . prof. I. c. Russell 

 Appalachian Mountains— Northern Section - - . Bailey Willis 

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

 Mt. Shasta-A Typical Extinct Volcano - - - - j. s. Uiller 



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, aor. 



Rnn it with ,mhr ^j AMERICAN BOOK COMPANY, 



IMev\/ Vorl< - Ci r-iclr-i r-iati CHIcaao 



Ripans Tabules assist digestion. 



Terrestrial Magnetism 



An International Quarterly Journal 



Edited by L. A. BAUER 

 With the Co=operation of Eminent Magneticians 



TYTITH the March, 1897, issue, this Journal, devoted exclusively to Terrestrial MaKix^ti*^"! and allied 

 W 'subjects, such as Earth Currents, Auroras, Atmospheric Electricity, etc.. entered on its second 

 volume. The hearty co-operation extended by the workers in this promising field ol investigation, an 

 abundantlv shown bv the numbers thus far issued, has made this Journal the intcrnatt<in.Tl ornan for 

 making ktiown the latest achievements. The magnetic needle has become such a promisin^: instrument 

 of research, not only in terrestrial, but in cosmical physics, that this Journal ajipcals 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 support. 



Among the contributors of the main articles in the past have been Messrs. Bams, B<Vgcn. Chrcc, 

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



Future numbers will contain : 



"The Earth, a Great Magnet," 



nv UK. J. A. ri.KMING. 



"The Electrification of the Atmosphere," 



Hv I'ROK. AI.KX.^NDKK McADIE. 



"The Height of the Aurora," 



Rv l'R(>i\ CI.KVIU.ANI) AHIUv 



"The Distribution of Magnetic Observatories," 



(Illu-stratcd), 



By Prof. MAX ESCHENHAGEN, 



etc., etc. 



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

 price: Two dollars ; single numbers, fifty cents. Foreign subscription price: Nine •hilliiiKS. nine 

 niarlcs. or eleven francs. .address: ^.g- p, ^ g- 3^^, ^L IS/1 ACS r>J EXI SIVl . 



The University ol Cincinnati, Cincinnati. Ohio. 



