The source was Rob from BPC at Palenque and he got it from an old 
medicine man in Chile.  The Anadenanthera colubrina seeds had been tested at 
12% bufotenin.  The powder was already prepared (supposedly this involved 
toasting till they "pop" like popcorn to remove the oils that don't burn; 
then pulverize).  I guess yopo is traditionally snuffed but I had heard 
smoking works as well, at least with this batch.
     I was alone and weighed the .8g of powder into a large waterpipe.  In 
about 2 large hits it was coming on strong like DynaMiTe.  Visuals were 
stronger than 5MeO but not as much as NN.  Eyes open was noticable with 
patterns enhanced and depth amazing.  Eyes closed fast hallucinations almost 
cartoonish.  Heavy pressure in the head, pins and needles in the body, and 
almost unpleasant heat and clammy sweating with mild stomach pain.
     Within a few minutes major body load had passed.  Colors and textures 
still enhanced with subdued but mixed lighting good for eyes open.  Some low 
frequency music is felt strongly in the body.
     +10 minutes the effects are still there but diminished with strong 
energy in the body.  By +30 minutes I was almost baseline.  I had not even 
finished the bowl.  I finished it then with some minor distortions but 
minimal.
     A subsequent experiment with a smaller dose gave similar results but 
not as strong as large dose alone, plus I knew what to expect.  This drug is 
about color, texture, and depth... plus you FEEL it in your body.