CYRIL GEORGE HOPKINS 



Phosphate Experiments. Science, n.s., vol. 45, p. 213. 



A Simple Explanation. Science, n.s., vol. 46, p. 362. 



191 S Sources of Fertilizing Materials for Illinois Farms. (With F. C. Bauer) 

 ///. Agr. Exp. Sta. Circ. 223. 



Illinois Wheat Yields with Nature's Fertilizers. (With J. E. Whit- 

 church, F. W. Garrett, H. F. T. Fahrnkopf, H. C. Gilkerson, H. J. 

 Snider, and E. E. Glick) ///. Agr. Exp. Sta. Circ. 229. 



Champaign County Soils. (With J. G. Mosier, E. Van Alstine, and 

 F. W. Garrett) ///. Agr. Exp. Sta. Soil Rpt. 18. 



Protecting the Greatest Base of Supplies. Rpt. III. Farmers' Inst., vol. 

 23, p. 21. 

 1919 Illinois Crop Yields from Soil Experiment Fields. (With F. W. Gar- 

 rett, J. E. Whitchurch, and H. F. T. Fahrnkopf) ///. Agr. Exp. 

 Sta. Bui. 219. 



1919 Yields from Ten Wheat Fields in "Egypt." (With J. E. Whit- 

 church, H. F. T. Fahrnkopf, and F. H. Kelley) ///. Agr. Exp. Sta. 

 Circ. 236. 



IIQ2 H EAAA2 MIIOPEI NA IIAPArH IIEPISZOTEPH TPO<HI 

 [How Greece Can Produce More Food]. (Translated into Greek 

 by George Bouyoucos) Pub. by The American Red Cross Com- 

 mission to Greece. To be reprinted in English by the University 

 of Illinois. 



Note. — In this compilation no attempt has been made to include the 

 numerous contributions made by Doctor Hopkins in the form of articles, 

 letters, and notes to the various newspapers and periodicals representing the 

 agricultural press. 



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