ADDENDA. 439 
Figs. 2,3, and 4 are halves of the lower jaws of three distinct 
species of Mice ; Fig. 5 presents a view of a fragment of 
the under jaw of a Wolf; Fig. 6 isa grinder of the Hyena. 
(H. fossilis, Cuv.) Taste 16.—Fig. 1 gives a view of the 
fragment of an under jaw found very lately amongst the 
ancient beach under Plymouth Hoe; it seems in the esti- 
mation of Col. Smith to belong tothe Pachydermatous tribe ; 
the teeth are greatly worn, and present dubious characters ; 
respecting this discovery see below. Fig. 2 is a tusk of a 
Bear (Ursus speleus of Buckland’s Reliq. Diluv. p. 17) 
Fig. 3 represents a large portion of the half of a lower jaw 
of H. fossilis. 
To these somewhat explanatory references, I will here 
add a few other scraps of information mostly obtained since 
the body of the work was printed, and belonging exclusively 
to the subject of fossil bones. 
Solitary fossil teeth occur in nearly all the caves of the 
district ; one such instance I have already recorded ; Mr. 
Hearder of Plymouth very lately informed me that at the 
entrance of the cave under the Hoe, he once found a 
Rhinoceros’ tooth, rounded by its exposure to the tide 
which now flows into it. The discovery of this tooth in a 
locality of this kind, and with the assumption of the cave 
having been the habitation of Hyzenas, strongly indicates 
the proposition of the sea, at the period of the existence of 
the Hyznas, Elephants, &c. having had a less elevation 
than is now presented by it, or on the contrary should it not 
have been such a domicile, it shows the boundary of the 
sea as assumed on its diluvial retreat ; (see p. 107) whilst 
the occurrence of bones of the same class,— Rhinoceros, (?) 
Elephant, Horse, &c. in the ancient beach above, tends to 
confirm the ideas which I set forth at p. 112 and 119 to the 
effect that the rise of the sea causing the formation of that 
beach took place subsequently to the zera of the cave animals, 
since, without doubt the tide in its elevation to that point 
would wash out the contents of intervening cavities, and 
throw up the more durable and resisting substances in 
common with the pebbles which indicate its precincts. To- 
gether with the bones of the above named animals are 
some of a large description of Whale, respecting the age 
of which a doubt may rationally exist ;—they may have 
