RHINOCEROS TICHORHINUS. B20 
an Hippopotamus, or Equus fiuvialis, that is, a River- 
horse ; for a Sea-horse, as commonly understood and ex- 
hibited, is a fictitious thing. Yet Pliny makes Hippopo- 
tamum (‘mari, terre, amni communem,’) to belong to sea, 
land, and rivers. But what are the differences and proper- 
ties of each kind, I leave others to inquire. The earth, 
or mould about them, and in which they all lay, being like 
a sea-earth or fulling earth has not a stone in it, unless you 
dig three feet deeper, and then it rises a perfect gravel.” 
This last passage gives a more exact knowledge of the 
matrix of the fossils than is usually found m analogous 
notices: we readily recognise in it the post-pliocene brick- 
earth and drift which have since yielded, especially in the 
counties of Kent, Surrey, and Essex, so rich a harvest of 
the remains of great extinct Pachyderms. 
‘*So have you the story, an account, if you please, of 
what was found, where, when, and upon what occasion. 
For more public satisfaction, and to facilitate the disco- 
very ; at least to help such as are minded to employ their 
skill in guessing and judging of the creature, whose remains 
these are, what it was for kind; we have by and with 
the help of an able limner, adventured on a scheme or 
figure of several of the teeth and bones, with their re- 
spective dimensions of breadth, length, and thickness.” 
‘*No man, we conceive, not willing to be censured of 
rashness, will be very forward to divine, much less to 
define or determine what the creature was; and, doubt- 
less, dubious enough it is, whether of the twain, the sea, 
or the land, may more rightly lay claim unto it.” 
Mr. Somner having, nevertheless, “‘ taken a large time 
of consideration of all particulars and circumstances fit 
to be duly and deliberately weighed and observed in 
the case,” adventures to conjecture it to be “ some sea-bred 
