Among the Contents of Forthcoming 

 Numbers of 



N 



WILL BE THE FOLLOWING: 



The Deserts and Forests of Arizona, 



By prof. B. E. FERNOW, Ph. D.. LL. D., etc., 



Chief of the Division of Forestry, U. S. Department of Agriculture ; 



Down the Volga, fronf] Nijni Novgorod to Kazan, 



By prof. FREDERIC W. TAYLOR, 



AND 



Several of the geographical papers to be 

 presented at the Toronto Meeting of the British 

 Association for the Advancement of Science. 



JUDD & DE*rWEIX<ER, PRINTERS, WASHINGTON, D. C. 



