14 
Inches 
Breadth: Of the talons 3514...c eke, let. CCG ete Gee. Oo: «ic, Sh ceee 13 
Wveneth ofttive thumibeis Joc) flys. sets he oa ede ee ee Se ee 24 
Breadth of the ball)of theithumab....05. 5. oh esioe . oe oak oe ee 
Length of the first toe ...... feb ge Ry cene Mises SAE ere SE 2 
deena thiotthe second (OG) sche csicd Bik eee cee cibe a oe 2i 
enethvor whe third toe rch. ssn ese erase eae ace 2: 
icventestibreadthyof, the t0es.).. 2a.) 4), a ae ioe ees SORBET 3 2 
The thumb is slightly bent back, and pointed, and the toes were 
armed with nails. 
Traces of one animal have been observed in a continuous line 
on a slab ten yards long. The length of the step varies a little, 
but in general, the distance between the point of the second toe 
of one hind foot and the point of the same toe in the hind foot 
immediately in advance, is between 21 and 22 inches. Each fore 
foot is placed directly in front of the hind, and the thumbs of both 
extremities are always towards the medial line of the walk of the 
animal. Some further observations are given by the authors with 
respect to the progression of the animal, on the supposition that the 
digit conjectured to be a thumb, was really the first. Conceiving 
such to be the case, they state, that the animal must have crossed 
its feet three inches in walking, for the right fore and hind feet are 
placed 14 inch on the /e/t side of the medial line, and the left fore 
and hind feet 14 inch on the right side of the same line. 
‘The casts of the Chirotherium, although the most remark- 
able, are by no means the most numerous, which exist on the 
Storeton sandstones. Many large slabs are crowded with casts in 
rilievo, some of which are supposed to have been derived from the 
feet of saurian reptiles, and others from those of tortoises. Occa- 
sionally the webs between the toes can be distinctly traced. “It is 
impossible,’ say the authors of the report, ‘‘ to look at these slabs 
and not conclude, that the clay beds on which they rested, must have 
been traversed by multitudes of animals, and in every variety of di- 
rection.” 
A note by Mr. James Yates was then read, giving a brief account 
of sketches of four differently characterized footsteps, traced from 
casts procured at Storeton, each of which is distinct both from the 
casts of the Chirotherium and the web-footed animal mentioned in 
the preceding report. 
A paper was afterwards read ‘‘ On two Casts in Sandstone of the 
impressions of the Hind Foot of a gigantic Chirotherium, from the 
New Red Sandstone of Cheshire,’ by Sir Philip Grey Egerton, 
Bart., M.P., F.G.S. 
These specimens first came under the notice of Colonel Egerton 
about 1824, and they were placed in the author’s cabinet in 1836; 
but it was not until the recent discovery of the Chirotherium at 
Storeton, that their true nature was suspected. The exact locality, 
