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normal
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caffeine
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LSD
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mescaline
1)
"Nourished on the blood of a schizophrenic, a spider weaves crazy webs."
-Guido Ceronetti, The Silence of the Body
During the 1950s, a swiss pharmacologist named Peter Witt conducted a set of experiments in spider doping. He found that the spiders spun uniquely cockeyed webs depending on which substance they had ingested.
-images and Peter Witt information from the great http://www.kirchersociety.org/blog