272 
THE GEOLOGIST. 
also taken some account of its neighbours. We have noticed, too, 
that in Yorkshire it for the most part reposes on the Speeton clay, 
though in certain localities it is next the lias and Kimmeridge clay, 
and that in Lincolnshire and Norfolk it i-ests on a dark brown pebbly 
mass supposed to belong to the lower greensand formation of the south 
of England. 
The Eed Chalk has also been discovered in a very unexpected place, 
although not in situ. I allude to the drift of Muswell Hill. In that 
collection of different materials, comprising examples from every for- 
mation from the London clay to the mountain limestone in a stratum 
of eighteen feet, the Red Chalk has been seen in a bouldered condition. 
By the kindness of Mr. Wetherell of Highgate, I am enabled to 
exhibit specimens from the drift of Muswell Hill. Any person who 
compares them with others from Hunstanton, would declare they 
came from the same bed, so alike are they in appearance. 
There was a time no doubt when this Red Chalk had a more 
extended range : its presence in the drift of Muswell Hill, as well as in 
the drift of other places, implies as much. Perhaps it may still exist 
elsewhere, deep down in the earth. 
In a well sunk at Stowmarket a red substance was found under the 
White Chalk, at a depth of 900 feet ; and in another well sunk at 
Kentish Town, the workmen met, at a depth of 1,113 feet below the 
surface, beneath the gault, a bed of red matter 188 feet thick — some 
of this red matter appeared to contain belemnites. 
Geologists are divided in opinion with respect to this deep-sunk 
red bed, which certainly is not always continuous (for instance, it was 
not found at a boring at Harwich), and some incline to the opinion 
that it belongs to the New Red, others that it is the equivalent of 
what is styled the Red Chalk. But it is difficult to give a solution at 
jiresent. It is certain that in the gault formation, or near it, beds of 
a red colour are occasionally found. Near Dorking the lower green- 
sand is capped by a local bed of bright red clay, eight feet 
thick. And examples of red clays from the gault of Ringmer in 
Sussex and Charing in Kent can be seen in the Museum of the 
Geological Society of London. Whether they have any relation with 
the Red Chalk proper of England depends upon the position which is 
given to that formation. 
