NOMENCLATOR AND BIBLIOGRAPHIA. 335 



long and laborious researches. I had con- 

 ceived the plan in the first years of my stud- 

 ies, and since then have never lost sight of it. 

 I venture to believe it will be a barrier against 

 the Babel of confusion which tends to over- 

 whelm the domain of zoological synonymy. 

 My book will be called ' Nomenclator Zodlog- 



ICUS. . . . 



The Bibliographia (4 volumes, 8°) was in 

 some measure a complement of the Nomen- 

 clator, and contained a list of all the authors 

 named in the latter, with notices of their 

 works. It appeared somewhat later, and was 

 published by the Ray Society in England, in 

 1848, after Agassiz had left Europe for the 

 United States. The material for this work 

 also had been growing upon his hands for 

 years. Feeling more and more the impor- 

 tance of such a register as a guide for stu- 

 dents, he appealed to naturalists in all parts 

 of Europe for information upon the scientific 

 bibliography of their respective countries, and 

 at last succeeded in cataloguing, with such 

 completeness as was possible, all known works 

 and all scattered memoirs on zoology and 

 geology. Unable to publish this costly but 

 unremunerative material, he was delighted to 



