MINISTRY 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. 



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



Government Press, Cairo, 1922. 



To be obtained either directly or through any Bookseller, from 



the GOVERNMENT PUBLICATIONS OFFICE, Ministry of Finance, 



Dawawin P.O., Cairo. 



Price P.T. 3. 



