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paper on that subject in the proceedings of this Society; 
and if with that animal, why not with other extinct 
species ? Whether, however, they have lived down to a 
later date, or man existed at an earlier than is generally 
ascribed to the " Beginning," it matters not, as either case 
may have been the fact, and equally refers to a remote 
antiquity. But, as yet, we have not in Yorkshire, or any 
county that I am aware of, positive evidence that there was 
a very ancient time when man lived and made rude imple- 
ments of flint, and that, subsequently, this race was either 
swept away, or emigrated on icebergs to another country, 
and then, after thousands of years, another perfectly distinct 
race sprang up, and manufactured more artistic implements 
of flint found in the same locality -where formerly resided 
the ruder manufacturers of the same material. 
The evidence, however, which our Yorkshire and the 
foreign flint implements alike adduce to me is, that since the 
first flints were chipped into shape by the human race, up to 
the present moment, there has never been any interruptions 
to their occupancy of this, or any other, country whatever. 
For, as Hugh Miller justly observes, " The geologist in the 
tablets of stone, which form his records, finds no examples 
of dynasties, once passed away, again returning. There has 
been no repetition of the dynasty of the fish, of the reptile, 
of the mammal." That is to say, of the peculiar dynasties 
of each class which characterized different and distant 
formations. The classes have been continued through 
countless ages, but the species have changed or been replaced 
by widely differing forms. As, for instance, the Cephalaspi, 
Coccostei, and Pterichthi, of the old red sandstone, made way 
for the Ganiods of the Carboniferous era, which in like 
manner disappeared, and were represented by other Graniods, 
Placoids, and Lepidotes of the lias, wealden, and chalk. In 
the same way, the small saurian reptiles of the sandstones of 
