Library, U. S. Nat. Museum. 



VOL. II 



AUGUST, 1921 



Established by BENJAMIN SILLIMAN in 1818 



''^titj 



THE 



AMERICAN 



JOURNAL OF SOIEEOE. 



Editor: EDWAED S. DANA. 



ASSOCIATE EDITO|lS 



Professors WILLIAM M. DAVIS and REGINALD A. DALY, 



OF Cambridge, 



Professors HORACE L. WELLS, CHARLES SCHUCHERT, 



HERBERT E. GREGORY, WESLEY R. COE and 



FREDERICK E. BEACH, of New Haven, 



Professor EDWARD W. BERRY, of Baltimore, 



Drs. FREDERICK L. RANSOME and WILLIAM BOWIE, 



OF Washington. 



FIFTH SERIES 



VOL. Ill— [WHOLE NUMBER, CCII]. 



No. 8— AUGUST, 1921. 



NEW HAYEN, CONNECTICUT. 



19 21. 



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