List of Illustrations xv 



Page 

 Map showing tracks of U. S. ship Tacoma and other vessels through Doubtful Islands 



region , 481 



Sketch of mast of U. S. sloop Levant washed ashore on Hawaiian Islands 487 



Relief map of Alaska, showing telegraph and cable lines of the U. S. Signal Corps 491 



Relief map of rhe Philippine Islands, prepared by U. S. Signal Corps. . . , 492 



Relief map of Porto Rico, showing telegraph lines constructed by U. S. Signal Corps. . . . 493 



Collecting albatross eggs on Laysan Island 495 



Albatrosses on Laysan Island 496 



The first step in the favorite dance and song of the albatross 497 



The second step in the dance 497 



The finale or duet . . 497 



A more common ending to the dance 497 



