On the Movements of Petals 37 



of variations in temperature, acting, not through turgescence, 

 but by stimulation of the protoplasm. 



To Professor Doctor C. E. Bessey and Professor Doctor F. E. 

 Clements, under whose guidance the work embodied in this thesis 

 has been carried on, I owe my most sincere thanks for encour- 

 agement and for suggestions and advice concerning instruments 

 and methods of experimentation. 



BIBLIOGRAPHY 



Balfour, John. Mamial of Botany. 263. 1875. 



Burgerstein, A. Ueber die nyctitropischen Bewegungen der 

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Darwin, Charles. The Power of Movement in Plants. 1885. 



Detmar, W. Das Kleine Pflansenphysiologische Praktikum. 

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Dutrochet, M. Revcil et Sommeil des Plantes. Ann. Sci. Nat. 

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Farmer, J. Bretland. On the Mechanism zvhich is Concerned 

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Hansgirg, Anton. J'erbrcitnng der karpotropischcn Nnta- 

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Ibid. New Biological Researches. Bot. Cent. 51. 1892. 



Ibid. Neiie Untersuchnngen iiber den Gamo- und Karpotrop- 

 ismus sozvie iiber die Reis- und Schlafbewegungen der Bliithen 

 und Laubblattcr. Sitzungsb. der Konig. bohmischen Ges. der 

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Ibid. Neue Beifrdge snr Pflanzenbiolo gie nebst Nachtrdgen 

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Hofifman, Herman. Lc Sommeil des Plantes. Ann. Sci. Nat. 

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Hofmeister, W. Flora. 45:516. 1862. 



227 



