36 
NORTH GALLERY. 
[UPPER 
quarters, where enormous strength and weight are combined, indicating 
that the animal habitually rested on its haunches and powerful tail, 
and whilst in that position could freely use its flexible arms, and the 
large claws with which its fore-feet were provided. 
The affinity of this animal to the existing Sloth is evident, from 
the structure of the skull, blade-bone, &c. ; the teeth are the same 
in number, kind, structure, mode of growth, and mode of implanta- 
tion, as in the Sloth, whence the similarity of food may be inferred ; 
but the different proportions and colossal bulk of the Megatherium 
indicate that instead of climbing trees, like the Sloth, it uprooted and 
tore them down, to feed upon the leaves and succulent branches. 
This skeleton is composed, in part, of casts of bones, in the Museum 
of the Eoyal College of Surgeons, brought from Buenos Ayres by Sir 
Woodbine Parish, and, in part, of casts of bones of the same species 
and size in the British Museum. In the Wall Case No. 4, between 
the windows, is deposited an extensive series of the bones of different 
individuals of the Megatherium, all of which are from the region of 
Buenos Ayres. In Case No. 3 are deposited the bones of allied 
animals, Scelidotherium, Mylodon, &c, also from South America. On 
the stand with the Megatherium is placed a portion of a carapace or 
shell of a species of Glyptodon, an extinct genus nearly allied to the 
Armadillos, and of which several species have been discovered in 
South America. In some of these species the carapace must have been 
from ten to twelve feet in length : in all, as in the smaller species 
here exhibited, it was devoid of those "bands" or "joints" which 
give it flexibility in the small existing Armadillos. In the Wall 
Case, at the end of the room, may be seen the tail, with the bony 
sheath, of two of the largest kinds of Glyptodon. In the centre of 
the Room has been placed the cast of an entire carapace, with the 
singularly-armed tail-sheath of this animal ; and on the tops of the 
Wall Cases are considerable portions of the carapaces of species of 
Glyptodon. 
The Elephant remains exhibited in the Wall Cases opposite 
the windows have been referred by Dr. Falconer to nine species ; 
viz., three European, and six Indian ; but of the European species 
one (the Mammoth) is common to the northern parts of Europe, 
Asia, and America: a skull of this animal, found at Ilford, in Essex, 
having tusks of ten feet eight inches in length, has been recently set 
up in the middle of the Room. The Mastodon genus presents three 
European species (one of which is found in England), three species 
from India, one from North America, and one from' South America. 
The Mastodon of which the entire skeleton is mounted in Room VI. 
is of the North American species (Mastodon Ohioticus). All these 
species of Elephant are extinct ; that is to say, not any of them 
resembles either of the two living species, the African and Asiatic 
Elephants ; and of the genus Mastodon there is no living representa- 
tive. The European Mastodons are found in strata which are more 
ancient than those which contain the Elephant remains ; but the 
