Raed 
THE HAWKESBURY SANDSTONE, 63 
large irregular undulating layers, which are also subdivided by 
lamin with every kind of dip and direction, rarely exceeding 23°. 
Now I am prepared to maintain that this structure only belongs 
to eolian rocks, and is never found in any other. The non- 
upheaval of the beds I take to be conclusive, without any other 
argument, yet still there are other facts quite as significant. We 
kn 0 f . 
no marine formation which does not leave some marine 
fossils ; that is to say, no matter how sandy the coast, or what 
the nature of the rock, marine remains are always found in the 
its. In all the records of deep-sea soundings, such a thing as 
an azoic formation has never been found. Even the very deepest 
here there can be no question of a deep sea (of 2,000 or 3,000 
fathoms for instance), as there has been no upheaval. The same 
is of a different character. The rocks in such cases are clayey 
ad sandy, with frequent changes of mineral character, and 
tains. What kind of an estuary or river deposit would that be? 
f Akai ‘5 
ot the rule. 
eo further than this. 
