Zoology 725 



demanded. The names had increased manyfold since Agas- 

 siz's work appeared, and Von Marschall's work was not only 

 old, but much time had to be wasted on account of its divi- 

 sion into twenty-one separate lists. The work of Scudder, in 

 which all the names were arranged in a single alphabetical 

 list, was therefore a most welcome boon to naturalists. In- 

 stead of the twenty thousand (19,966) names of Agassiz's 

 time, about eighty thousand were given in the new work, 

 and the last " Nomenclator Zoologicus " became an indis- 

 pensable adjunct to the laboratory of every systematic zoolo- 

 gist. Even this has now become superannuated, and a new 

 edition, or rather new work, is already being prepared under 

 the auspices of the Institution, and may be expected before 

 the close of the century. 



The earliest of the bibliographical aids published by the In- 

 stitution was by Charles Girard, and entitled, " Bibliographia 

 Americana Historico-Naturalis; or, Bibliography of Amer- 

 ican Natural History for the year 1851 " (1852). 



Other aids furnished by the Institution for the benefit of 

 investigators are the bibliographies published from time to 

 time. Some of these form a special series entitled " Bib- 

 liographies of American Naturalists," and five have been 

 published, namely : 



I. "The Published Writings of Spencer F. Baird, 1843- 

 1882" (1883). 



II. " The Published Writings of Isaac Lea" (1885). 



III. " Bibliography of Publications relating to the Collec- 

 tion of Fossil Invertebrates in the United States National 

 Museum, including Complete Lists of the Writings of Field- 

 ing B. Meek, Charles A. White, and Charles D. Walcott" 

 (1885). 



IV. "The Published Writings of George Newbold Law- 

 rence" (1891); and 



