534 
Mr. Bucicland on the 
maximum of their force is wholly incompetent either to excavate the 
main trunks of the vallies through which they flow, or to produce 
the gravel beds that cover them at a distance from the hills and 
mountains whence this gravel has been transported, is given in 
chap. 20 of Dr. Kidd’s Geological Essays, and in the second Essay 
of Mr. Greenough’s Examination of the first Principles of Geology, 
The same subject has been treated with equal accuracy and ability 
by M. Brongniart in the latter part of his <e Histoire naturelle de 
l’Eau,” published in the 14-th volume of the “ Dictionaire des 
Sciences naturelles,” and separately as a small pamphlet, which I 
strongly recommend to the attention of those persons who wish 
for correct information as to the effects produced by water upon 
the surface of our globe. 
I have now only to add a few words on the organic remains 
found in the beds of diluvian gravel which we have been describing. 
In all the gravel pits of the valley of the Thames round Oxford, at 
Abingdon also, and Dorchester and Wallingford, and Hurley 
Bottom near Henley, teeth and tusks, and various bones of the 
mammoth or northern elephant have been found abundantly. 
There are in the Ashmolean Museum at Oxford, some vertebras and 
leg bones of an elephant of enormous size, probably sixteen feet 
high, and in a delicate state of preservation, which were found in 
the gravel near Abingdon three years ago ; mixt with these occur 
the bones of the rhinoceros, hippopotamus, horse, ox, hog, and 
several species of deer, often crouded together in the same pit, and 
not much rolled, although they are rarely, if ever, united in entire 
skeletons. Fragments of sixteen horns of deer were dug up lately 
within a short time in the same gravel-pit, with the great elephant’s 
bones, near Abingdon. These bones are extremely soft and tender 
whilst they remain wet, and harden by drying. They are not in the 
