TOPOGRAPHY OF THE SAGAMI SEA. 



15 



is to be explained by the comparatively steep incline of the 

 bottom ami the proximity of much greater depths, — offers ex- 

 ceptional facilit}^ to those who wish to study them. And to this 

 circumstance must be ascribed in great measure whatever success 

 I have had in collecting m)^ Hexactinellidan material. 



Mera 3. Mera 2. Mera 1. C. Mera. 



View of Cape SunosakI witli the Mera Iiills in the background. Seen from a point 



on tlie line ' Mera 3.' 



