William Crocker 



B.S., University of Illinois, Urbana, Illinois, 1902; A.M., 1903; Ph.D. (Botany and Chemistry), 



Chicago, August, 1906 



ASSOCIATE PROFESSOR OF PLANT PHYSIOLOGY, THE UNIVERSITY 



OF CHICAGO, CHICAGO, ILLINOIS.— COLLABORATOR AND 



PLANT PHYSIOLOGIST, U. S. DEPARTMENT OF 



AGRICULTURE, BUREAU OF PLANT 



INDUSTRY, WASHINGTON, D. C. 



Assistant in Plant Physiology, The University of Chicago, 1906-07; Associate, 1907- 

 08; Instructor, 1909-11; Assistant Professor, 1911-15; Associate Professor, 1915 — . 

 Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer. 



PUBLICATIONS 



R61e of seed coats in delayed germination. Bot. Gaz. 42: 265-91. 1906. — Germi- 

 nation of seeds of water-plants. Ibid. 44: 375-380. 1907. — Effect of illuminating gas 

 and ethylene upon flowering carnations. (With L. I. Knight.) Ibid. 46: 259-276. 

 1908. — Effect of illuminating gas and its constituents on flowering carnations. {With L. 

 I. Knight.) Plant World 12: 83-88. 1909.— Longevity of seeds. Bot. Gaz. 47: 69- 

 72. 1909. — A new method of detecting traces of illuminating gas. {With L. I. Knight 

 and R.C.Rose.) Science N.S. 31: 636. 1910.— Toxicity of smoke. {With L. I. Knight.) 

 Bot. Gaz. 55: 337-371. 1913.— The peg of Cucurbitaceae. {With L. I. Knight and 

 Edith A. Roberts.) Ibid. 50: 321-339. 1910.— The effects of advancing civilization 

 upon plants. School Sci. Math. 13: 277-289. 1913. — Delayed germination in the 

 seed of Alisma plantago. {With W. E. Davis.) Bot. Gaz. 58: 285-321. 1914.— A 

 method of prophesying the life duration of seeds. {With J. F. Groves.) Proc. Nat. 

 Acad. Sci. 1:152-155. 1915. — Mechanics of dormancy in seeds. Amer. Jour. Bot. ,3: 

 99-120. 1916. 



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