No. XIII. FORAMIN1FERA. 295 



No. .XIII. 

 RHIZOPOVA EETICULARIA. 



FORAMINIFEEA. 



BY HENRY B. BRADY, F.R.S., F.L.S. 



ABOUT fifty samples of material were preserved, to be 

 examined for Microzoa and Microphyta. These were for the 

 most part soundings in depths of from 10 to 260 fathoms, 

 dust from ice-hummocks, or mud from beds of glacial deposit 

 of greater or less age. The Rhizopod-fauna of the mud-beds 

 requires no separate treatment, as it is practically identical 

 with that of the present sea-bottom of the same latitudes. 



Many of the soundings were exceedingly small in quantity, 

 and after the washing required to rid them of impalpable 

 inorganic matter left scarcely any residue, but of the entire 

 number about forty furnished sufficient specimens to give a 

 general, if not an exhaustive, idea of their constituent 

 organisms. In some cases the close proximity of several 

 soundings, and their similar depth, permitted the treatment 

 of two or three together, or at least the incorporation of the 

 results in one list, and in a few instances the quantity of 

 material was not sufficient to show adequately the nature of 

 the sea-bottom ; but after condensation as described, and the 

 omission of those furnishing defective data, there remained 

 sufficient basis for the construction of a distribution-table 

 comprising twenty-four localities. The table represents fairly 

 the salient features of the Foraminifera-fauna of an area 

 lying between the entrance of Smith Sound in lat. 73 N. or 

 thereabouts and the most northerly point attained by the 



