148 NATURALISTS' ASSISTANT. 



and Norse languages ; as many important works are published 

 in those tongues. 



Other necessary works are : 



Agassiz L., Nornenclator Zoologicus, 4to, Solduri, 1846-48. 



Marschall, A. I)., Nomeuclator Zoologicus, 8vo, Wien, 1873 (a 

 continuation of Agassiz's work). 



A large Atlas of the world. 



Lippincott's complete pronouncing Gazetteer, 2 vols., 8vo, 

 Philadelphia, 1880. 



Scudder, S. H., Catalogues of Scientific Serials of all coun- 

 tries, 8vo, Cambridge, 1879. 



Royal Society's list of Scientific Papers, 8 vols, 4to, London, 

 1868. 



