NOTES AND QUERIES, 



410 



interests of the Society and the satisfaction of its members if tlie Society's 

 publications were punctually delivered, whether thick or tliin, at their appointed 

 times; to publish, in fact, what icai^ ready, instead of waiting indefimtcly lor 

 tliat which ought to be so. We have had many inquiries of the like nature, 

 which, from a desire of non-interference with any society's individual manage- 

 ment and conduct, we have not hitherto noticed. The monographs are delivered 

 to the subscribers only, and are not published. The subscription is one guinea 

 per annum ; and subscribers can substitute any of the printed monographs for 

 that due for the current year of their subscription, or they can subscribe fur 

 any or the whole of the past years. 



London Clay Fossils. — Dear Sm, — Can you inform me of the best 

 locahty for obtaining London Clay fossils, having been disappointed in ray ex- 

 cursions to Highgate and Hornsey ? I also find it difficult to purchase them. 

 — Yours truly, Ldmund Jones. — Fossils are, we know, difficult to be got by 

 the uninitiated at Highgate and Hornsey. They occur chieily low down in tfie 

 beds ; and the few accessible localities requii-e to be pointed out by some one 

 conversant with the pits. At Highgate they 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 all times, of any excavations or pit- 

 sinkings, which may come under theii' notice, where London Clay fossils may 

 be got. 



Contemporaneity or Rock-Formations. — Sir, — Are the formative pro- 

 cesses of the several geological sybtems which Hank the primary upheavals in 

 diiferent parts of the \^■orld considered to be simultaneous ? For instance, 

 when the carboniferous deposits were going on in the British isles, was the 

 same system of deposits in operation in other regions of the globe, where v/e 

 find it developed *:' — I am, ISir, yours truly, John Curry, Boltsham, near 

 Darlington. — AV^ith certain resen-ations our answer would be generally in the 

 atlirmative. It has, however, been observed that the present Australian life is 

 like that of the ancient Jurassic, that is, geologically the equivalent of the 

 oolitic age, although contemporaneous with the actual phase of the Tertiary 

 period in which we exist. In like maimer there appears to have been a certain 

 variation and relation of organic forms bet^\■c■eu tiie ancient Triassic and 

 Jurassic formations all over the world — local oscillations, so to express it, of 

 the geogra])liical distribution of at least resembling forms between the Tria:5Sic 

 of the one age and the Jurassic of another, but both at particular periods ex- 

 isting contemporaneously in cUlferent parts of the globe. 



Non-Protrusion or Solid Granite. — Sir, — I wish to ask for some informa- 

 tion on the following subject. Some time ago I heard a lecturer on geology, 

 whose name I wiU not mention, but who is well known as a gentleman of great 

 reputation in the scientific world, assert " that in no instance had granite ever 

 been protruded right through superincumbent strata, altiiough it may have 

 heaved and dislocated them to a eou^id;:riible degree." Some surprise being 

 shown by certain of the audience at tliLi assertion, he accounted for the sub- 

 sequent exposure of the granite by the disintegration of the ineumbent 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 natural 

 surface of the earth, had cooled at enormous depths beneath it. 



Now, Sir, I wish to ask if any instances have been Ibuud of granite in large 

 masses— for we must not confound them with vehis of the same Y<d<^^— overly in rj 

 sedimentary deposits, giving the appearance of their having overflowed at the 

 time of upheaval ? If such occur, I would again ask how you could reconcile 

 such facts with the supposition above-mentioned, viz., that granite has never 

 protruded through strata, and consequently could never have overflowed r If 

 no instances of granite lying upon aqueous rocks have been obsenx-d, 1 do not 



