IINISTRY OF AGRICULTURE, EGYPT 



Technical and Scientific Service. 



Bulletin No. 20. 



THE FIXATION OF 

 ATMOSPHERIC NITROGEN 



A Communication made to the Cairo 

 Scientific Society, January 3, 1919, by 



FRANK HUGHES. 



(Edited by the Publication Committee of the Ministry of Agriculture.) 



Government Press, Cairo, 1922. 



Price 



P.T. 3. 



