THE NORWEGIAN NORTH-ATL ANTIC EXPEDITION 



1876 — 1878. 



BOTANY. 



PEOTOPHYTA: 



BIATOMACEÆ, SILICOFLAGEILATA ail CILIOFLAGELLATA. 



BY 



H. H. GRAN. 



WITH 4 PLATES. 



PEINTED BY GKØNDAHL & SØN. 

 1897. 



