218 PROF. T. M’KENNY HUGHES, M.A. 
tumultuous deposit formed by waves of that sort is totally different 
from the kind of deposits we have to deal with in most of these 
cases. We are obliged to say of a great many there is a doubt 
about it; it is not clear. But in many it is perfectly clear. You 
know the physical geography of the country for successive ages, 
as you have traced the history back. You see there, perfectly 
coinciding with all the evidence you get from other sources, deposits 
forming layers of different material, showing different transporting 
power ; water of one velocity carrying the coarse stuff; water of 
another velocity carrying the fine stuff; floating bodies collected in 
the eddies, and so on, and the whole story can be read if you get 
a sufficient number of sections in the gravel beds. We are not 
speaking of gravel beds in the case before us, but a question has 
been raised as to the value of the kind of evidence we are dealing 
with when we approach this question from the geological point of 
view. No cautious man would make any very strong statements 
founded on evidence derived from gravel about which he could not 
tell you more than that it was gravel and carried at some time, he 
‘could not tell you when, or carried by some waves, he could not 
tell you how produced. Generally speaking, you can get better 
evidence than that. 
I was very glad to hear the Admiral’s confirmation of the biting 
power of sharks, but if somebody could give us direct evidence in 
the shape of a bone which he sawa shark bite, that is what we 
want. That is what I asked Baron Von Hugel to give me. He 
said he thought he had somewhere a bone fish-hook which had been 
scored by a large species of ray caught in some of the Pacific Islands, 
and the natives told him the scorings were due to the teeth of the 
fish they caught; but I could not get one to bring here, and as we 
are all extremely sceptical people we should like just to haye one 
which somebody saw in the mouth of the shark. It is an interesting 
fact that the distances between the points of the teeth in some of 
the jaws of fish and of saurians from the Kimmeridge Clay of the 
Ely district, are exactly the same as the intervals between the 
furrows on the scored saurian- bone. We may get over the difficulty 
as to the markings being seen on one side only, by the suggestion 
of the probability that the flesh was not removed down to the bone 
on both sides, and it was only when the teeth touched the bone 
that the cuts would be made. I am very glad to have been 
‘instrumental in bringing Mr. Smith Woodward here. Mr. Smith 
‘Woodward is one of the best authorities in England on fish, 
