William Burnet McCallum 



B.S. Agric, University of Toronto, Toronto, Canada, 1894; Ph.D. (Plant 

 Physiology and Plant Morphology), Chicago, September, 1904 



CHIEF BOTANIST, INTERNATIONAL RUBBER COMPANY, 

 SAN DIEGO, CALIFORNIA 



Assistant in Plant Physiology, The University of Chicago, 1905-06; Associate Pro- 

 fessor of Botany, University of Arizona and Arizona Agricultural Experiment Station, 

 Tucson, Arizona, 1907-10; Chief Botanist, International Rubber Company, 1910 — . 



Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Ecol. Soc. Amer. 



PUBLICATIONS 



On the nature of the stimulus causing the change of form and structure in Proser- 

 pinaca palustris. Bot. Gaz. 34: 93-108. 1902. — Regeneration in plants. Ibid. 4:0 : 97- 

 120, 241-263. 1905.— The reciprocal influence of scion and stock. Plant World 12: 

 281-286. 1909. 



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