110 PROCEEDINGS OF THE ACADEMY OF [Feb., 



Darwin, Charles: Animals and Plants under Domestication. 



Origin of Species. 1859: 112. 



Davenport, Charles B.: Experimental Morphology. 1897: 27, 85, 249. 



Davenport, Eugene : Principles of Breeding. 1907 f 222, 255, 257, 260, 308-316. 



Forest Leaves: Trees Cannot be Acclimatized. XI: 108. February, 1908. 



Harshberger, John W.: Vegetation of the Yellowstone Hot Springs. Ameri- 

 can Journal of Pharmacy. LXIX: 625. 



Harrington, Mark W.: The Advent of Spring. Harper's Monthly Magazine. 

 May, 1894, p. 874. 



MacDougal, D. T.: Textbook of Plant Physiology. 1901: 20, 56, 92. 



Influence of Altitude and Climatic Factors upon Vegetation : Acclimatization 



5th Year Book Carnegie Institution of Washington. 1907: 121. 



Morgan. Thomas H.: Evolution and Adaptation. 1903: 319. 



Pfepfer, W.: Pflanzenphysiologie, 1897-1904. Accomodation Begrenztheit 

 derselben, II: 81, 90, 246; an Concentrationen, I: 415; II: 128, 137; an 

 Gifte, II: 243, 247, 337; an Sauerstoffpressung, I: 548, 551; II: 131; an 

 Temperatur, II: 91, 292, 302; an Temperatur, Gifte, Concentrationen ist 

 nicht erblich, II: 243, 337. 



Schimper, A. F. W.: Pflanzengeographie auf physiologischer Grundlage, 1898: 

 55-58, with bibliography on page 60. 



Vernon, H. M.: Variation in Animals and Plants. 1903: 378. 



Wallace, Alfred R,.: Article Acclimatization in Encyclopedia Britannica, 

 I (1878): 84-90. 



Watt, Sir George: The Wild and Cultivated Cotton Plants of the World. 

 1907: 272, 328. 



Woodruff, Major Charles E.: The Effects of Tropical Light on White Men. 

 1905: 321. 



Woods, A. F.: Plant Pathology. Science, New Ser., XXVI: 541-543. Oct. 

 25, 1907. 



