EXPLANATION OF THE TLLUSTRATION 
Prare XLUL. (Zop) A photograph of the inner sur- 
face of the bark of Viroia caropuyiLa (Schultes & 
Cabrera 12855), showing the red resin-like exuda- 
tion which is elaborated into yakee-snuff. Rio 
Apaporis, Comisaria del Amazonas, Colombia. 
( Bottom) The thick syrup resulting from the boiling 
of the scrapings of the inner bark of Viroia cato- 
PHYLLA is allowed to dry before being pulverized 
and mixed with ashes of Throproma scuntincaANUM in 
the preparation of yakee-snutf, Rio Apaporis, Comis- 
aria del Amazonas, Colombia. 
Photographs by Vacuarp Evans Scuunres 
