MUSEUM OF COMPARATIVE ZOOLOGY. 61 



Lagena gracillinia Pulvinulina elegans 



Cristellaria gibba Sphceroidina bulloides 



Uvigerina pygmcEa 



Residue, 93.57 per cent, brown, consists oi Minerals [25.00], m. di. 0.05 mm., 

 quartz, feldspars, hornblende, fragments of coal. Siliceous organisms [3.00], 

 fragments of Radiolarians. Fine washings [65.57], argillaceous matter and fine 

 mineral particles, with a few fine siliceous fragments. 



In the examination and description of these deposits I was assisted by the 

 abbe Reuard, who determined many of the mineral particles. I have also to 

 acknowledge the services rendered by my assistants, Mr. James Chumley and 

 Mr. Frederick Pearcey. 



John Murray. 



