

a6TR Congress \ Trnnsir. ni? m?Pi3i?Qi?MT*'i>TArr<o . I Document 



1 No. 884 



SdSes^wf HOUSE OF REPRESENTATIVES 



■Zool 



DEPARTMENT OF THE INTERIOR 



Albert B. Fall, Secretary 



United states geological survey 



George Otis Smith, Director 



Professional Paper 124 



THE INORGANIC CONSTITUENTS OF 

 MARINE INVERTEBRATES 



SECOND EDITION, REVISED AND ENLARGED 



BY 



FRANK WIGGLESWORTH CLARKE 



AND 



WALTER CALHOUN WHEELER 



Washington 



GOVEKNMEXT PRINTING OFFICE 

 1922 



^-..,3 



