CHAP, i.] INTRODUCTION. 23 



surface, and when they die their shells settle to the 

 bottom. 1 



The next high authority who expressed an opinion 

 was Professor Huxley, and he was very guarded. The 

 samples procured by Capt. Dayman in the 'Cyclops,' 



FIG. %.Orbiilina universa, D'ORBIGNY. Highly magnified. 



in 1857, w^ere submitted to him for examination, and 

 in his report to the Admiralty 2 in 1858 he says : 



1 Explanations and Sailing Directions to accompany the Wind and 

 Currents Charts. By M. E. Maury, LL.D., Lieut. U.S.N., Super- 

 intendent of the National Observatory. 6th Edition. Philadelphia, 

 1864. P. 299. 



2 Appendix A to Deep Sea Soundings in the North Atlantic Ocean 

 between Ireland and Newfoundland, made in H.M.S. ' Cyclops/ 

 Lieut.-Commander Joseph Dayman, in June and July 1857. Pub- 

 lished by order of the Lords Commissioners of the Admiralty. 

 London, 1858. 



