168 PLANT PHYSIOLOGY 



NAGELI. 1860. Beitr. z. wiss. Bot., part 2, p. 96. Leipzig. 



PFEFFER. 1890. Plasmahaut (Abh. Kgl. Ges. d. Wiss. Leipzig, 16, 185). 



QUINCKE. 1888. Annalen der Physik (N.F.), 35. 



RITTER. 1899. Flora, 86, 329. 



SCHAEFER. 1898. Flora, 85, 135. 



SCHUTT. 1889. Jahrb. wiss. Bot. 33, 594. 



STAHL. 1880. Bot. Ztg. 38, 393. 



DE VRIES. 1885. Bot. Ztg. 43, i. 



WILLE. 1902. Biol. Cbl. 22, 257. 



LECTURE XLIII 



CHMIELEWSKY. 1904. Bot. Cbl. Beih. 16, 53. 

 FARMER and DIGBY. 1907. Annals Bot. 21, 161. 

 KNIEP. 1906. Jahrb. wiss. Bot. 43, 215. 

 KUSTER. 1905. Ber. bot. Ges. 23, 254. 

 LOEB, J. 1906. Arch. f. d. ges. Phys. 115, 564. 

 SHIBATA and MIYAKE. 1907. Bot. Magaz. 21, 45. 

 VOEGLER. 1891. Bot. Ztg. 49, 641. 



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