LETTER OF TRANSMliTAL. 



Cincinnati, Ohio, 



May 21, 1900. 



Sir: I have the honor to submit herewith, for publication as a 



bulletin of the United States Geological Survey, the manuscript of a 



joint work by Mr, Ray S. Bassler and myself, entitled A Synopsis 



of American Fossil Bryozoa, including Bibliography and Synonymy. 



Ver}' respectfully, 



John M. Nickles. 

 Hon. Charles D. Walcott, 



Director United States Geological Survey. 



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