122 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



K.— Collection of Sea-bottoms. 



K. I. Typical Submarine Deposits. 



1. Terrigenous. 



a. Gravel. 



b. Sand. 



c. Mud. 



2. Neritic. 



a. Nullipore. 



b. Shells. 



c. Shell sand. 



d. Coral sand. 



3. Pelagic or Planktonic. 



a. Globigerina ooze. 



b. Badiolarian ooze. 



c. Diatom ooze. 



K. II. Submarine Deposits of the Irish Sea. 



1. Terrigenous. 



a. Gravel from Bradda Head. 



b. Sand from Liverpool Bar. 



c. Mud from deep Channel. 



d. Sand from Bahama Bank. 



e. Sand from King William Bank. 



2. Neritic. 



a. Nullipore from off Dalby. 



b. Shell sand from off Spanish Head. 



c. Shell sand from off Calf of Man. 



3. Model of Floor of Irish Sea. 



