512 W. J. SOLLAS ON SOME THREE-TOED FOOTPRINTS 
5 counting forwards. Nos. 2and 4 
are right feet. The distance be- 
tween the heel of No. 1 and that 
of No. 3,1s 3 feet 6 inches, between 
Nos. 3 and 5, 3 feet 2 inehes, 
and between Nos. 2 and 4, 2 feet 
10 inches. 
Thus the average stride was 3 
feet 2 inches long; and the deyvia- 
tions from this seem to suggest 
that the animal which made the 
marks was picking its way through 
what was very pebbly ground. It 
does not seem to have been always 
successful in doing so; for in the 
case of footprint No. 1 the end of 
the middle toe has been planted 
right on a large limestone pebble, 
which seems to have quickened the 
pace of the creature; at all events 
the succeeding stride is the longest 
of the three. 
The best-marked of the footprints 
are Nos. 1, 3, 4 and 5; and as 
these do not differ in any essential 
detail, but only vary in the greater 
or less perfect state of their pre- 
servation, it will conduce to brevity 
if I describe the characters of a 
single one of them, selecting the 
most perfect and supplying its de- 
ficiencies from the others. 
This footprint, then, shows the 
marks of three toes, diverging 
from a posterior heel. The middle 
toe is the most regularly defined ; 
the outer toe comes next in regu- 
larity, and the inner last. The 
outer toe is confluent with the heel ; 
the middle and inner toes are 
separated from it and from each 
other. 
The print of the middle toe is 
deeply impressed, forming astraight 
rounded channel, 63 inches long, 
and contracted and swollen at 
intervals in correspondence with 
the number and position of the 
phalanges of the original digit. 
Thus we find the first phalangeal 
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