COMPARATIVE SCELETONS&c 
feet arc bent for the earth to pafs cafily underneath them; the bread is 
alfo concave for the fame purpofe, and the hind legs Hand wide for the 
earth to be thrown between them, and their jaws are particularly con- 
llrudfed tor their feeding on the bark of trees, as well as on grafs. 
The tail-piece reprefents a mole in two views, to {hew the vaft 
iirength of the fore feet for digging; the flenderneft of the head, the 
back bones with fmall procefles, and the pofture of their hind legs, all 
contrived for their palling eafily along the holes they dig. 
CHAPTER V. 
The fron tice-piece is the fceleton of an oflrich, which is a bird made 
for walking, therefore the ofla innominata and bones of the legs are made 
exceeding ifrong, and when {landing {freight (unlike other birds) almoft 
under the center of gravity; the wings are fmall, but nevertheleft very 
ufeful when they run Taft or leap. 
The head-piece is the fceleton of a fparrow; and the fceleton of a bat, 
which though it flies like a bird, has the body of a quadrupede; it hangs 
by two little hooks, which nature has provided for that purpofe. 
The tail-piece is the fceleton of a fwan, one of the finefl: of the fwim- 
ming birds: The body is made broad for floating, and the legs which 
are their oars, are formed to pufli advantageoufly backwards. 
CHAPTER VI. 
The frontice-piece is the fceleton of an hog laid upon boards. 
The head-piece is the fceleton of a camelion Handing as they ufu- 
ally do in trees, where they live by catching flies, and for their drink 
they thruft forward their lower jaw, and receive the drops of dew that 
fall down their foreheads. 
The tail-piece is the fceleton of a fquirrcl; its fore teeth are formed 
for biting nut-ihells, like the teeth of rats and rabits; and like the bear 
and monkey has its fore limbs ftronger than the hind. 
CHAPTER VII. 
The frontice-piece : The uppermoft figure is the bones of the head 
of a cat, prepared to {hew the lamella: in the nofe for the membranes 
to be fpread upon for the fenfe of fmclling, and part of the fcull is taken 
