PLATE 7 
A. —“Guayacan” (lignum vitae) entirely disintegrated by termites; all of the wood 
has been digested and excreted and then packed solid. From Balboa Shops, Canal 
Zone. 
B. —Another section of the same species of wood showing structure built up of 
excreted wood by the termites. Note that it is a honeycombed instead of a compact 
mass as in A. Lignum vitae is one of the hardest woods known in the Tropics. 
