13 
-a depression of the surface. The lowest seam of clay was so thin, 
that the marks penetrated into the subjacent sandstone. The fol- 
lowing account.is then given ofa hind foot and a fore foot, selected 
from slabs in the Museum of the Royal Institution, Liverpool. 
Hind Foot, consisting of five digits;.one of which, from its resem- 
blance to a human thumb, has been generally distinguished by that 
designation. 
Inches. 
Total length from the root of the thumb to the point of the se- 
LOUD! BOG cody deed me ean In IR PUR ant= et Mae eae Toke wer rs 9 
Extreme breadth from the point of the thumb to the point of 
HED WOME LOSES GEE Cine enC ene ecto oon mmne re Eras ae 
Ler MUMmACKOSS (CMe Alay, oi. eyuusie me, losdi icy chees inictnaleya choumeneects 
Length of the curved line extending from the root of the thumb 
POMIES MOU GE Pe ee PR ecd sha certian Fae hol H's op igo, cpi eps aR UE 
Breadth of the ball of the thumb . 
Relief of the ball of the thumb from the surface of the slab. 
Length of the first toe from the root to the point ........ oe 
HRemetnmotmtme SCCOMM GIEtO  o.5.) sce a 4 950, :5 Semin ono, © or si aualin ole, eke 
Me WecEmolmt net nindvarbtOpeit: Weak) cece setae 6 Bees: abo Sasi Sie, foes See 
Were theolathe fourth GUttO. 26.5 sey 14 tas) syaregsr so eytce sls apt ene 
averse breadtn, or the first three toes... . 1. 4 asics a 
Average breadth of the fourth toe rather less than. . cP 
Relief of the second toe, which presents the greatest promi- 
MONEE sovocecu es cb6domengouoddo FO po ba oobogU HO GOUe OS oo 
= o> 
bole Slotol—tolto|e 
tole 
He bho 
One hind foot has been observed which measured 12 inches in its 
greatest length. 
Judging from the appearance of the casts, the sole of the foot 
must have been amply supplied with muscles, the casts of the ball 
of the thumb and the phalanges of the fingers being prominent. 
The digit, which has been called a thumb, is of a tapering shape, 
and is bent backwards near the extremity, where it ends in a point. 
It is extremely smooth, and there is no satisfactory evidence of either 
a nail oraclaw. ‘The toes are thick and strong, and had probably 
three phalanges each, and at the terminations are traces of stout, 
conical nails or claws. The sole of the foot is supposed to have 
been covered bya slightly rugose skin, the folds of which are stated 
to be distinctly visible in the casts of the toes. 
Fore Foot. Perfect impressions of the fore feet are extremely 
rare, owing either to the animal having used those feet lightly, or 
to the impressions having been obliterated by the tread of the hind 
feet. ‘The best preserved cast exhibits a thumb and three toes, 
being deficient of the fourth. The dimensions, which are generally 
half those of the hind foot, are as follows: 
Inches. 
Length from the root of the thumb to the point of the second 
toe . Le tahoe 
Total breadth not ascertained it in - consequence of the absence of 
the fourth toe. 
