A LIST OF MAPS 



Early trade routes to South America . . . . 

 The Canal Zone 



The Panama Canal: Pacific entrance and profile view . 



A LIST OF FULL-PAGE HALF-TONE 

 ILLUSTRATIONS 



4 

 11 

 15 



The inlet from the island shore . 



A ship passing through Gatun Lake . 



The island from the inlet . 



Spanish bayonet palm with termite nest 



The spike ladder . 



A stilt palm with termite nest 



Termite runways on tree trunk 



Anteater feeding on termites 



Termite mound nest 



The home of the crocodile . 



Where the long-toed jacana walks on the lily pads 



The machete-cut trail 



Where soldiers and mosquitoes lived together in old 

 San Lorenzo 



Clean paved street in Panama .... 



Drain-making by the American Sanitary Service 



Frontispiece 



18 



35 



36 



41 



69 



72 



82 



84 



119 



140 



151 



Fort 



180 

 187 

 189 



vni 



