118 
THE GEOLOGIST. 
paragraph tliat the rise of the ground mentioned was caused by some neigh- 
bourmg hill or higher land, the weight of which, pressing on soft clay beds, 
would cause them to rise up, probably at their outcrop. The accompanying 
diagi-am will illustrate this action. If a 
limestone hill a presses by its weight 
(see downward arrow g) on a clay stra- 
tum, h, resting on hard rock,^ Cy the 
effect of the weight must be to com- 
nress or flatten the clay bed h. If this 
clay bed can find a vent, which it would 
naturally do at its outcrop, i k, the effect of the pressure would be to cause 
the clay land to be squeezed out there in the dii*ection of the arrows, h e ; the 
hi"-hest elevation, or crown of the dome of the raised tract (sho^Ti by the 
dotted lines) being at d. This kind of elevation is not uncommon in gault dis- 
tricts, which are thus pressed up between the Chalk and Lower Greensand. — 
Ed. Geol. 
Fossils from Old Red Sandstone at Whitbatch. — Sir, — It may be 
interesting to some of your readers to know that I have procured a nearly perfect 
Cephalaspis Lyellii, from a quarry of the Old Red Sandstone at Whitbatch, near 
Ludlow. I believe this to be the most perfect Cephalaspis that has been found 
in this neighboui-hood — I only know of one other specimen showing any portion 
of the body ; that specimen was procured some years ago, from some men that 
were breakers of stone for the road near Pontrilas; but the exact locality where 
it came from is unknowTi. The quarry at Whitbatch is a very prolific one for 
Cephalaspides ; and some very fine Pteraspides have been procui'cd from it. — 
I am. Sir, yours, &c., Alfred Marston, Cove Street, Ludlow. 
List of Fossils found in the Old Red Sandstone, in the neighhow^ood of Ludlow ^ 
By a. Marston. 
Species. 
Cephalaspis LAjellii. 
Selweyi 
asterolepis 
Localities. 
Whitbatch, Bouldon. 
Oakley Park, &c. 
mitbatch. 
Onchus, fish-defence Whitbatch. 
Fteraspis rostratus Downton HaU drive. 
Lloydii ^Vhitbatch. 
Crouchii Bouldon, near Bouldon Hall. 
Spiny Stem of Tree Whitbatch. 
Fucoids, very large Bouldon. 
Egg -packets of Pterygotus Whitbatch. 
Eish-Tracks Bouldon. 
Skeleton of a nondescript Aniimal found ne.yr Buenos Ayres. — In 
a book of travels in Spain, publislied (anonymously) about sixty years ago, the 
writer, in describing his visit to the museum at Madrid, mentions that " The 
most remarkable and interesting object in the cabinet of natural history (which 
occupies a suite of ten rooms), is the skeleton of a nondescript animal which 
was discovered some years ago, buried about forty feet in a mountain, near 
Buenos Ayres. The length from its rump to its nose is about thirteen feet : 
its height a little more than six. The breadth and size of its body are very 
astonishing ; and the collar- and blade-bones are not unlike those of the human 
species. The legs are uncommonly stout, particularly those behind, which are 
of such prodigious and wonderful strength that they must have been designed 
to support, upon occasion, the whole body of the animal reared up ; an idea 
which is rendered more probable from the length of the claw and the solid 
piece of bone which projects behind, forming a basis to the leg. Whether it 
