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 iu the 'Cyclops,' 



Fio. 3. — Orbxdina universa, D'Orbiony. Highly magnified. 



in 1857, were submitted to him for examination, and 

 in his report to the Admiralty 2 in 1858 lie says : — 



1 Explanations and Sailing Directions to accompany the Wind and 

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

 intendent of the National Observatory. Cth 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. 



