bLuuiuuii, lum 



The 



National Geograph i c 



Magazine 



i 



AN ILLUSTRATED MONTHLY 



•.// 



Editor: JOHN HYDE 



Associate Editors 



A. "W. QREELY W J McQEE HENRY GANNETT 



C. HART MERRIAM ELIZA RUHAMAH SCIDMORE 



CONTENTS 



PAOB 



THE WASHINGTON AQUEDUCT AND CABIN JOHN BRIDGE. 



-With illustrations. D D. GAILLARD. 337 



GARDINER GREENE HUBBARD. 345 



POLLUTION OF THE POTOMAC RIVER. F H NEWELL. 346 



THE DELTA OF THE MISSISSIPPI RIVER. E. L. CORTHELL. 351 



THE ANNEXATION FEVER • HENRY GANNETT 354 



SIR JOHN EVANS AND PROF. W^ J McGEE. W^ith portraits. 358 



SOME RECENT GEOGRAPHIC EVENTS. 359 



Geographic Literature, p. 362; Proceedings of the National Geographic Societv 



p. 365; Geographic Notes, p. 367. 



WASHINGTON 

 PUBLISHED BY THE NATIONAL GEOGRAPHIC SOCIETY 



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