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with Foraminifera of various types, but mainly consisting of 
finely divided matter and mineral particles. There can be 
little doubt, from the frequently variable success experienced 
in sounding and dredging over contiguous parts of the same 
area or district, that at the sea bottom regions of life and 
death may be conterminous, and are very often irregularly 
distributed. 
Discovery of Buccal Teeth in the Genus Firola. 
When favorable opportunities arise in the “‘ Lord Warden,” 
the towing net affords abundant material for study and intel- 
lectual enjoyment; and it is quite pleasing to see the interest 
evinced by officers of all classes in the discovery of new 
forms, or, at least, such as they have not seen before. This 
is, however, more especially the case when the difficulty of 
displaying them under the microscope is removed, and ob- 
servation is so far rendered easy. z 
Having frequently taken Firole of large size in the towing 
net, even when other marine creatures, with the exception 
of Salpz, were few and far between, I found, as a new fact, 
that the mouth was furnished with a longitudinal row of 
fine conical teeth on either side. These were also in general 
slightly curved, with the convexity forwards, and exhibited 
an increase in size from before backwards; the first being 
