42 ANIMALS OF’ THE PAST 
six of a lesser species. It was quarried near 
Middletown, in 1778, and for sixty years did 
duty as a flagstone, fortunately with the face 
downwards. When taken up for repairs the 
tracks were discovered, and later on the slab, 
which measures three by five feet, was trans- — 
ferred to the museum of Amherst College. 
There is an interesting parallel between the 
history of footprints in England and America, 
for they were noticed at about the same time, 
1830, in both countries; in each case the tracks 
were in rocks of Triassic age, and, in both in- 
stances, the animals that made them have 
never been found. In England, however, the 
tracks first found were those ascribed to tor- 
toises, though a little later Dinosaur footprints 
were discovered in the same locality. Oddly 
enough these numerous tracks all run one 
way, from west to east, as if the animals were 
migrating, or were pursuing some well-known 
and customary route to their feeding grounds. 
For some reason ‘Triassic rocks are particu- 
larly rich in footprints ; for from strata of this’ 
same age in the Rhine Valley come those cu- 
rious examples so like the mark of a stubby 
