BIBLIOGRAPHY, A STUDY OF RESOURCES. 157 



large quarto volumes. The first series, in six volumes, deals 

 with the literature of 1800-1863 ; the second series, in two 

 volumes, with the literature of 1864-1873 ; the third, and still 

 unfinished series, with the literature of 1874-1883. It arranges 

 the papers by authors, numbering those of each author con- 

 secutively through the three series. There is no classification 

 by subjects, and no subject index, so that one can obtain a 

 reference only in case the author is correctly known. On the 

 score of convenience it is to be regretted that the Royal 

 Society did not imitate the compact American model of library 

 catalogue, but on the contrary adopted a type and arrange- 

 ment which has rendered their volumes needlessly bulky and 

 inconvenient. 



Three other works, though not strictly bibliographical in the 

 sense of those above mentioned, deserve to be named here. 

 These are : 



1. Nomenclator zoologicus continens nomina systematica 

 generum animalium tarn viventium quam fossilium, auctore 

 L. Agassiz. Soloduri, 1842-1846. 2d edition, 1848. 



2. Nomenclator zoologicus, etc. A comite Augusto de 

 Marschall. 



3. Nomenclator zoologicus, by Samuel H. Scudder. 



Agassiz's work contained (2d edition) 32,964 entries, Mar- 

 schall's 19,966, Scudder's about 80,000. Mr. Scudder's work, 

 like everything done by the distinguished president of the 

 Marine Biological Laboratory, is a monument of painstaking 

 industry and well-directed thoroughness, and it should be at 

 hand for every zoologist to consult who has a new genus to 

 name, so that needless duplication may be avoided. Scudder's 

 Nomenclator was published as Bulletin No. 19 of the United 

 States National Museum. It was based on Agassiz's Nomen- 

 clator, together with the manuscript addenda, which Professor 

 Agassiz had accumulated during a long course of years. It 

 covers the names introduced down to the close of the year 

 1879. For later names consult the Zoological Record. 



Finally, we are indebted to Mr. Scudder for still another 

 work, which you will often find invaluable, namely, his Cat a- 



