NO. 30 SMITHSONIAN EXPLORATIONS, I9Q12 67 
Paraiso, through the courtesy of the Canal Commission. Here he 
made arrangements for visiting the islands of Taboga and Taboguilla 
ni 
Fic. 72—Waterfall from a small side-stream on the Rio Grande, near 
Cana, Darien, Panama. Photograph by Hildebrand. 
Fic. 73.—Hydrographic Gauging Station, above Alhajuela, Panama. 
Photograph by Busck. 
where certain conditions regarding mosquitoes, observed in IO11, 
suggested closer investigation. 
