39 
Algae of more interest, however, were found growing on roots of 
mangroves in the swamps bordering the Pacific terminus of the 
Canal at Balboa, formerly known as La Boca. Here, also, were 
secured specimens and photographs of a peculiar, peri 
and at present undetermined tree that was growing in the “ man- 
rove formation’”’ in association with Rhizophora, we 
Laguncularia, Conocarpus, etc. For access to a photographic 
Fic. 12. A spiny-trunked native palm (-4s/rocavvam 7), at Culebra, Canal Zone. 
dark-room in Ancon, I am indebted to the kindness of Dr. Samuel 
T. Darling, Director of the Pathological Laboratory of the Ancon 
Hospital. While making our headquarters at Ancon, we spent 
a day at Culebra, where the deepest cut of the Canal is being 
m Here we collected mosses, etc., photographed native 
ealnie and also made a call upon Col. George W’. Goethals, 
