VIL 
A JUNGLE LABOR-UNION 
PreRopactyL Purs led me to the wonderful 
Attas—the most astounding of the jungle labor- 
unions. We were all sitting on the Mazaruni 
bank, the night before the full moon, immediately 
in front of my British Guiana laboratory. All 
the jungle was silent in the white light, with now 
and then the splash of a big river fish. On the 
end of the bench was the monosyllabic Scot, who 
ceased the exquisite painting of mora buttresses 
and jungle shadows only for the equal fascina- 
tion of searching bats for parasites. Then the 
great physician, who had come six thousand 
miles to peer into the eyes of birds and lizards in 
my dark-room, working with a gentle hypnotic 
manner that made the little beings seem to enjoy 
the experience. On my right sat an army cap- 
tain, who had given more thought to the possible 
secrets of French chaffinches than to the ap- 
proaching barrage. There was also the artist, 
who could draw a lizard’s head like a Japanese 
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