iv The National Geographic Magazine 



Page 



National Geographic Society 178 



Our Plant Immigrants; by David Fairchild, Agricultural Explorer, in Charge of 



Foreign Explorations 179 



Modern Transmutation of the Elements ; by Sir William Ramsay '. . . . . 201 



Brazil and Peru 203 



Walter Wellman's Expedition to the North Pole 205 



The Polar Airship ; by Walter Wellman 208 



Farming on the Isthmus of Panama; by Dillwyn M. HazlETT 229 



An Interesting Photograph 237 



Magnetic Survey of the Pacific Ocean ; by L. A. Bauer 237 



"Tibet and Turkestan" (Oscar Terry Crosby) 239 



The Roosevelt Glacier 240 



National Geographic Society 240 



The New British Empire of the Sudan ; by HERBERT L. Bridgman 241 



The Breaking up of the Yukon ; by Captain George S. Gibbs 268 



Mount Vesuvius 272 



The Probable Cause of the San Francisco Earthquake; by Frederick Leslie RansomE. . 280 

 The Record of the Great Earthquake Written in Washington by the Seismograph of the 



U. S. Weather Bureau ; by C. F. Marvin 296 



The San Francisco Earthquake of April 18, 1906, as Recorded by the Coast and Geodetic 



Survey Magnetic Observatories ; by L. A. Bauer and J. E. Burbank 298 



Geographic Literature 301 



"The Republic of Chili" (Marie Robinson Wright) 301 



"The Congo" (a Report of the Commission of Inquiry) 301 



"Old Province" (Theodore A. Cook) 301 



"The Philippine Experiences of an American Teacher" (William B. Freer) 301 



Books on Italian Subjects 302 



Letter from N. H. Darton 302 



Annual Excursion of the National Geographic Society 302 



Cotidal Lines for the World ; by R. A. Harris 303 



Where the Wind Does the Work ; by Collier Cobb 310 



The Eruption of Mount Vesuvius; by Thomas Augustus Jaggar, Jr 318 



The Cali fornia Earthquake 325 



The Diamond Mines of South Africa ; by Gardiner F. Williams 344 



Canadian Immigration '. 356 



Photographs of Wild Game t 358 



The Luray Caverns 358 



Notes on the Panama Canal 362 



Notice to Members 364 



Letter from H. A. Largelamb 364 



Geographic Literature 364 



"Hydrology of the State of New York" (George W. Rafter) 364 



"The New Brazil" (Marie Robinson Wright) 364 



"The Discoveries and Explorers of America" (Charles Morris) 364 



Photographing Wild Game with Flashlight and Camera; by George Shiras, Third 367 



South America 424 



Growth of Florida 424 



The Golden Trout 424 



Restocking our Rivers and Waters with Fish 424 



Paper from Cotton Stalks 425 



The Skeleton in Luray Cave 425 



