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EXPLANATION OF THE ILLUSTRATION 
PLare XX. Reproduction of the illustration of Nicotiana 
rustica (‘‘ pycielt’’ or ‘‘picietl’’) and a portion of the 
discussion of tobacco, from Francisco Hernandez: ““Re- 
rum Medicarum Novae Hispaniae thesaurus, seu plant- 
arum, animalium, mineralium mexicanorum historia’’ 
(Rome 1651) p. 173. 
[ 172 } 
