BMITHSONIAN MISC( LI ANEOU8 COLLECTIONS 



VOL. en, NO. 6, PL. IS 



! "wi-r rnipical /mu. An .n|ii,iiu- (.'lu ii ohuk lU wi ilic lower 

 L liaLiiL's \'aIIo\ lUMi- ImiIijo. (.'anal /oiio. 



Fig. 2. — Humid Lower Tropical Zoiit. Typical section of forest interior near 

 Gatun, Canal Zone, exposed by clearing of foreground. 



