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K.— Collection of Sea-bottoms. 



K. I. Typical Submarinp: Deposits. 



1. Torrif^ciious. 



a. Gravel. 

 h. Sand, 

 c. Mud. 



2. Neritic. 



a. Nullipore. 

 h. Shells. 



c. Shell sand. 



d. Coral sand. 



3. Pelagic or Planktonic. 



a. Globigerina ooze. 

 h. Radiolarian ooze, 

 c. Diatom ooze. 



K. II. SuBMAEiNE Deposits of the Irish Sea. 



1. Terrigenous. 



a. Gravel from Bradda Head. 

 h. Sand from Liverpool Bar. 



c. INIud from deep Channel. 



d. Sand from Bahama Bank. 



e. Sand from King William Bank. 



2. Neritic. 



a. Nullipore from off Dalby. 



h. Shell sand from off Spanish Head. 



c. Shell sand from off Calf of Man. 



3. Model of Floor of Irish Sea. 



