Report of the President. 29 



3. The Curator of Books and Publications, on receiving an 

 edition from the printer or binder, arranges and disposes of 

 the publication as follows: 



a. A "reserve series" of fifty copies is set apart, not for 

 the present to be drawn upon, and for distribution in complete 

 sets only ; 



b. An "author's series" of twenty-five copies is handed to 

 the author for his private use; 



c. A "reference series" not to exceed two hundred copies 

 is issued to the leading libraries, museums and educational 

 institutions of the world, it being the purpose to have the list 

 of these institutions made with care, and to place, either by 

 sale or gift, a complete set of our publications in each for 

 reference for all future time. 



d. An " exchange series " not to exceed one hundred copies 

 is issued to such institutions, organizations and individuals 

 as may furnish an equivalent exchange. 



e. x\ "general series," from which are drawn copies for 

 distribution among working men of science (as may be recom- 

 mended by the heads of departments and duly approved by 

 the Director), for the preparation of "reviews," for distribution 

 among friends of the Museum, for use among field helpers, for 

 use as complimentary copies, sales, etc. 



Following is a list of the scientific publications of the 

 Museum issued in 1903, as received by the Curator for dis- 

 tribution and exchange: 



DEPARTMENT OF GEOLOGY AND INVERTEBRATE PALAEONTOLOGY.' 



Bulletin, Volume XIX. 



C. H. Hitchcock. "Notice of a Species of Acidaspis from a Boulder of 

 Marcellus Shale, Found in Drift, at West Bloomfield, New Jersey." (Pages 

 97-98, plate vi.) 



R. P. Whitfield. " Notice of Six New Species of Unios from the Laramie 

 Group." (Pages 483-487, plates xxxviii-xl.) 



R. P. Whitfield. ' ' Observations on a Remarkable Specimen of Halysites 

 and Description of a New Species of the Genus." (Pages 4S9-490, plates 

 xli and xlii.) 



Journal, Volume III. 



E. O. Hovey. "Martinique and St. Vincent Revisited." (Pages 38-56, 

 9 illustrations.) 



