CHAPTER XI. 



1842-1843: ^.t. 35-36. 



Zoological Work uninterrupted by Glacial Researches. — 

 Various Publications. — " Nomeuclator Zoblogicus." — 

 " Bibliographia Zoblogiae et Geologise." — Correspondence 

 with English Naturalists. — Correspondence with Hum- 

 boldt. — Glacial Campaign of 1842. — Correspondence 

 with Prince de Canino concerning Journey to United States. 

 — Fossil Fishes from the Old Red Sandstone. — Glacial 

 Campaign of 1843. — Death of Leuthold, the Guide. 



Although his glacier work was now so 

 prominent a feature of Agassiz's scientific 

 life, his zoological studies, especially his ich- 

 thyological researches, and more especially his 

 work on fossil fishes, went on with little inter- 

 ruption. His publications upon Fossil Mol- 

 lusks,^ upon Tertiary Shells,^ upon Living and 

 Fossil Echinoderms,^ with many smaller mon- 

 ographs on special subjects, were undertaken 



1 Etudes Critiques sur les Mollusques Fossiles,4:nos., 4°, with 

 100 plates. 



2 Iconographie des Coquilles Tertiaires repuiees identiques 

 sur les vivansy 1 no., 4°, 14 plates. 



8 Monographie d'Echinodermes vivans et fossiles, 4 nos., 4°, 

 with 37 plates. 



