440 
THE GEOLOGIST. 
Deer. — 1. Metatarsal, nearly perfect. 
Ilorse. — 1. Tooth of upper jaw, "1 
2. Tooth of upper jaw, > These teeth arc more curved than recent teeth. 
3. Tooth of lower jaw. ) 
These fossils arc in the cabinet of the proprietor of the estate on which they 
were discovered. In the year 185!j, a fine tusk of elephant was taken out of the same 
gravel; curved rather more than half a circle, measuring seven feet on its outer curve, 
tiiree feet of the hollow base being wanting. It was seven inches in diameter at 
its proximal end, and noai'ly 4 inches in diameter at its distal extremity. This 
fine fossil tusk is now in the Sadbury Museum. 
The gravel in which the above and many other mammalian fossils have been 
discovered belongs to the Boulder-Clay formation. And in it the boulders of 
neai'ly all known British rocks may be recognized, especially those which are 
sufficiently hard to have survived the transit hither, such, for instance, as the 
various sandstones, and the hardest of the Oolites. Here we meet with boulders 
and angular blocks of the calcareous grit of the Heddington quarries, near 
Oxford; others very much like the forest-marble, and inferior oolite, greensand, 
and an abundance of hard chalk; some of these fragments are angular, while 
others are perfectly smooth and rounded. 
The matrix in which these minerals and organic fossils are embedded is, in one 
part of this extensive detitral deposit, a greyish sand ; at others a yellowish clay, 
of which bricks are made. 
This interesting deposit of bouldcr-clay and gravel assumes a thickness here of 
from .30 to 40 feet on the right bank of the river Stour as we descend that stream, 
and continues for several miles to the pleasant little town of Bures St. Mary, 
forming small abrupt hills and valleys with beautiful undulations. 
There is not perhaps a detrital deposit in England where a greater variety of 
fossils might be obtained than where the above mammalian remains were found. 
Yours truly, 
Stanway. John Bkown, F.G.S. 
Note on Eaetiiquakes, by John Calvert, F.G.vS., C.M.E., &c. — Shocks 
of earthquakes are of such frequent occurrence in the West Indies, and tropic* 
generally, that few residents make any close observation or record of those awful 
phenomena. At the same time, the houses lieing for tlie most part built of wood, 
the immediate personal danger cannot be considered an ordinary excuse. During 
a residence of several years in Jamaica, I witnessed so many that latterly I became 
more sensible of their ai)proach, and was the better prepared to observe theii- 
effects. The most fearful shock I witnessed was in 1852, about ten o'clock p.m. . 
I was standing at a drawing-table, when 1 became suddenly sensible of its 
approach ])y the peculiar and indescribable feeling of faintness and despondency 
that is invariably the precursor or physical etfect of them ; and in an instant X 
found my ruler rolling towards me, which as soon took the opposite direction away 
from me. The pictures on the wall swung to and fro six or seven times, at inter- 
vals of about two and a-half seconds; the glasses jingled on the sideboard. The 
horses and cattle pastiu-ing round the house stumbled and fran about visibly 
affected; the blood-hounds in the house growled, and distended their le"-s, slidin-- 
on the brilliantly polished floors ; even the poultry gave evidence of their excitiT- 
nient. The negroes fell on their knees to supplicate protection, and all creation 
seemed to be made instantaneously sensible of that Divine power that " weighed the 
mountains in scales, and the earth in a balance." I felt like the ant whose 
industry I have often watched, and wth tlie stamp of my foot shaken in an 
instant the labours of millions level with the earth. From my memoranda 
at the time, my impression then was, that the peculiar sensation felt in the first 
instance origniatcd in the elc\'ation of the ground, from some internal power, and 
that the " undulations," as they are usually termed, were the gradual subsidence 
or settlement, first on one side and then on the other; for on comparing notes with 
