...the fine pores through which the pseudopodia protrude through the shell. I took similar Globiyerince and Orbulina almost daily in a fine net at Messina,...enable these little animals to float below the surface VOL. XXIII. D of the water by greatly increasing their surface, and consequently their friction against...

...in a fine net at Messina, often " Preliminary Noln on the Nature of the Sea-bottom procured by the in great numbers, particularly in February. Often...animals to float below the surface of the water by increasing their surface greatly, and consequently their ftiction against the water, and rendering...

...director of the Civilian Scientific Staff on board. Read before the Royal Society, Nov. a6, 1874. | in great numbers, particularly in February. Often...animals to float below the surface of the water by increasing their surface greatly, and consequently their friction against the water, and rendering...

...through which the pseudopodia protrude through the shell. I took similar Globigerina and Orbulince almost daily in a fine net at Messina, often in great...enable these little animals to float below the surface VOL. xxni. » of the water by greatly increasing their surface, and consequently their friction against...

...the suggestion that the spines with which Orbulina and Globigerina are crowded " probably contribute essentially to enable these little animals to float...water, and rendering it more difficult for them to sink." But the force of this suggestion is altogether weakened by the fact that Ptdvinuiinff, equally...