NOTES AND QUERIES. 
415 
interests of llic Society and the satisfaction of its members if the Society's 
|)iiblieations were punctually delivered, whether thick or tliin, at llicir apiioiiiled 
times; to puhlisli, in fact, what was ready, instead of waiting indeluineiy for 
tliat whicli ui<(/hf to be so. We have had many inquiries of the like nature, 
which, from a desire of uon-intcrferencc with any society's individual nianage- 
nieiit and conduct, wc iiave not hitiierto noticed. Tiie monograplis are delivered 
to the subscribers oidy, and are not published. The subscription is one guinea 
per annum ; and subscribers can substitute any of the ]n-inted monographs for 
that due for the current year of their subscription, or they can subscribe for 
any or the whole of the past years. 
London Clay Fossils. — Dear Sie, — Can you inform me of tlie best 
locabty for obtaining London Clay fossils, having been disappointed in my ex- 
cursions to Highgate and Hornsey ? I also iind it diificult to purchase them. 
— Yours truly, Edmund Jones. — Fossils are, we know, difficult to be got by 
the uninitiated at Highgate and Hornsey. They occur chietly low down in the 
beds ; and the few accessible localities require to be pointed out by some one 
conversant with the pits. At Highgate tliey should be sought for at the base 
of the bank near the Archway. We should be obliged to any of our readers 
and correspondents to send us notes, at aU times, of any excavations or |n(;- 
siidvings, wliich may come under their notice, where London Clay fossils may 
be got. 
Contemporaneity of Rock-Fgumations. — Sir, — Are the formative pro- 
cesses of the several geological systems whicli flank the primary upheavals in 
diiferent parts of the woi-ld considered to be siinidtaneous 'i For instance, 
when the carboniferous deposits were going on in the British isles, was tlie 
same system of deposits in operation in other regions of the globe, where we 
find it developed — I am. Sir, youi's truly, John Curry, Eoltsham, near 
Darlington. — With certain reservations our answer would be generally in tlie 
aflirmative. It has, however, been observed that the present Australian life is 
like that of the ancient Jurassic, tliat is, geologically the equivalent of the 
oolitic age, although contemporaneous with the actual phase of the Tertiary 
period in which wc exist. In like manner there appears to have been a certain 
variation and relation of organic forms between the ancient Triassic and 
J urassic formations aE over the world — local oscillations, so to express it, of 
the geograpliical distribution of at least resembling forms between the Triassic 
of the one age and the Jurassic of another, but both at particular periods ex- 
isting contemporaneously in different parts of the globe. 
NoN-PiiOTRUsiON OF SoLiD Granite. — SiR, — I wisli to ask for some informa- 
tion on the following subject. Some time ago I heard a lecturer on geology, 
whose name I will not mention, but who is well known as a gentleman of great 
reputation in the scientitic world, assert " that in no instance had granite ever 
be en protruded right through superincumbent strata, although it may have 
heaved and dislocated them to a considerable degree." Some surprise being 
shown l)y certain of the audience at this assertion, he accounted for the sub- 
sequent exposure of the graiute by the disintegration of the incumbent strata 
by atmospheric and other abrading influences ; in other words, he stated that 
all the numerous granitic peaks, which we now see rising far above the naturid 
surface of the earth, had cooled at enormous depths beneath it. 
Now, Sir, I wish to ask if any instances have been found of granite in large 
masses — for we must not confound them with veins of the same rock — overlyinrj 
sedimentary deposits, giving the appearance of their having overflowed at the 
time of uplieaval ? If sueli occur, I would again ask how you could reconcile 
such facts with the su])positioii above-mentioned, viz., that granite has never 
protruded through strata, and consequently could never have overflowed ? If 
no instances of granite lying upon aqueous rocks have been observed, 1 do not 
