40 .Mr. Rose’s Sketch of the Geology of West Norfolk. 
Again: “The extensive accumulations of peat and trees, 
along the shores of the Humber and its tributary rivers, hap- 
pened, probably, at the same period of time as those which 
have contributed to fill up the ancient lakes of Holderness. 
This is inferred, with the highest probability of truth, from 
the position of the peat with respect to the diluvial clay and 
pebbles; for wherever these occur together, the former is in- 
variably uppermost * .” 
Dr. Fleming, describing a submarine forest in the Frith of 
Forth, tells us the peat reposes upon a lacustrine silt; and 
from the tenour of his remarks he evidently considers it to 
belong to the “ modern epoch +”. 
My observations on the alluvial phsenomena are brief, in 
consideration of the great length to which my communication 
had already extended. For much valuable information on the 
subject I refer those who feel an interest in the inquiry to 
two essays by the Rev. Dr. Fleming, published in the ‘Trans- 
actions of the Royal Society of Edinbugh, vol. ix. p. 419, and 
in the Quarterly Journal of Science, 1830, vol. vii. p. 21; and 
to Mr. R. C. Taylor’s communication to a former volume of 
this Magazine, entitled “ On the Natural Embankments 
formed against the German Ocean on the Norfolk and Suf- 
folk Coast, and the Silting up of some of its Astuaries* ”,— 
papers replete with instructive matter. 
Waving further speculation on the causes of the muta- 
tions to which the small area that I have examined has been 
subjected, I have in conclusion merely to state that in thus 
arranging and publishing my geological notes I have but re- 
sponded to an appeal made by Dr. Fitton, from the chair of 
the Geological Society at the Annual General Meeting of the 
Fellows in 1828, in the following words: ‘ But those who are 
deprived of the privilege of travelling even in England, must 
not suppose that they can be of no service as geologists ; or 
if they belong to our body, that they are thus released from 
their obligation to be active in our cause: and there are two 
descriptions of persons,—the resident clergy, and members of 
the medical profession in the country,—to whom what I am 
about to say may be more particularly deserving of attention. 
Such persons, if they have not yet acquired a taste for natural 
science, can hardly conceive the interest which the face of the 
country in their vicinity would gain, however unpromising it 
may appear, by their having such inquiries before them; how 
much the monotony of life in a remote or thinly inhabited 
* Illust. Geology of Yorkshire, p. 56. 
+ Quarterly Journal of Science, vol. vii. 1830, p. 21. 
t Phil. Mae. and Annals, N.S., vol. ii. p. 295. 
