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Scientific American, Vol. 78, No. 21 (May 1898) (1898)

leaf 4

An illustration from Scientific American, Vol. 78, No. 21 (May 1898), 1898, leaf 4
en the ascent of water in the stem. He regards this as its main function rather than, as has been alleged, the prevention of excessive radiation. The nocturnal posi- tion of the leaf or leaflets may be classed under two heads : (1) They are directed downward, so that the COOK'S TIME BECOBDEB. under… … the same time. The clock mechanism, by acting di- p. 71. AN AUTOMATIC ACETYLENE. GAS GENEBATOB. © 1898 SCIENTIFIC AMERICAN, INC.

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