The American Museum Journal 



Volume XIII NOVEMBER, 1913 Number 7 



CONTENTS 



Cover, "On the Tana River" 



Copyrighted photograph of a herd of impalla, Africa, by Carl E. Akeley 



The Asphalt Group of Fossil Skeletons W. D. Matthew 291 



The asphalt pools of Rancho-la-Brea, yielding fifty species of birds and at least 

 as many mammals, form doubtless the richest repository of fossils ever dis- 

 covered. The new group in the American Museum serves to convey a picture 

 of the operation of these asphalt pools in past ages as death traps 



Trackers of the Cheringani Hills W. S. Rainsford 299 



The story of the help given to the Museum expedition for black rhinoceroses 

 by the warriors of a poison-hunting tribe, the Cheringani Dorobo of British 

 East Africa 



The "Fossil Forest" of Arizona George P. Merrill 311 



Museum Cooperation in the Teaching of School Hygiene and Sanita- 

 tion C.-E. A. Winslow 317 



Sea Lampreys and their Nests Louis Hussakof 323 



Museum Notes 326 



Mart Cynthia Dickerson, Editor 



Published monthly from October to May by the American Museum of Natural History. 

 Terms: one dollar per year, fifteen cents per copy. Entered as second-class matter January 

 12, 1907, at the Post-Office at Boston, Mass., Act of Congress, July 16, 1894. 



Subscriptions should be addressed to the American Museum Journal, 77th St. 

 and Central Park West, New York City. 



The Journal is sent free to all members of the Museum. 



