Vol. XVIII DKCEIvIBER 1, 1919 No, 5 



JOURNAL OF 



AGRICULTURAL 



RESEARCH 



CONXKNXS 



Page 



Nitrogen Metabolism of Two-Year-Old Steers - - - 241 



SLEETER BULL and H. S. GRINDLEY 



( Contribution from Illinois Agricultural Experiment Station ) 



Development of the Pistillate Spikelet and Fertilization in 



Zea mays L. -------- 255 



EDWm C. MILLER 



(Contribution from Kansas Agricultural Experiment Station) 



Response of Citrus Seedlings in Water Cultures to Salts 



and Organic Extracts ------- 267 



J. F. BREAZEALE 



(Contribution from Bureau of Plant Industry ) 



Physiological Study of the Parasitism of Pythium debary- 



anum Hesse on the Potato Tuber - - - - 275 



LON A. HAWKINS and RODNEY B. HARVEY 



( Contribution from Bureau of Plant Industry) 



PUBUSHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE, 



WITH THE COOPERATION OF THE ASSOCIATION OF AMERICAN 



AGRICULTURAL COLLEGES AND EXPERIMENT STATIONS 



WASHINGTON, D. C. 



WASHINQTON : QOVERNMENT PRINTINO OFFICE : Kit 



