Abstract:SCIENCEthus to one whose investigations have been confined to those species growing in the temperate zones, Cinchona furnishes splendid opportunity for the extension of his work to such allied tropical species.A tropical rain-forest presents peculiar conditions. The plants do not show the marked periodicity characteristic of colder and dryer regions. Where the temperature and rainfall are so nearly constant a t all times of the year ss at Cinchona, one is likely to find all of the stages in the life history of… Show more
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