J. Deane on New Fossil Footprints. 79 
A, are remarkably distinct, showing the articulations of the toes, 
which is not distinctly the fact in B. Unfortunately, for a clear 
comprehension of this assemblage of impressions, they have not 
been found to occur in consecutive series; they are solitary, but 
this may nevertheless happen from the fact that the animals were 
able to leap toa considerable distance. Those represented by the 
diagram, individually occupy a space of 13 by 10 inches, and 
taking the frog as the representative of the animal, its leaps must. 
have been truly wonderful. The impress of the posterior foot of 
a frog is nearly as much advanced in position as the former mem- 
bers; they occur upon the outer side, are superficial, and diverge 
considerably. ‘The impress of the anterior foot is deep and points 
directly inward, while that of the fossil foot is just the reverse, 
the toes radiating from the tarsus outward. If these views be 
probable, these impressions constitute the second order of quad- 
ruped footprints found at Turner’s Falls. : 
The third embraces those recently discovered, and differs essen- 
tially from the foregoing types; the feet are equal, divergent, fall 
: i mas 
& . 
jably distinguishe 
by the humber of joints of the several tces; the hind tce hav- 
ing uniformly fwo joints, the inner three, the middle four, the 
outer five.—Eps. 
