I'KOOEEDINGS OF GEOLOGICAL SOCIETIES. 
381 
great, pet ndo^'ictil series. The former wide extension of tlie Upper Old Red 
Saiulstoiie tliroughout the soutli-east of Seothmd was shown by the height at 
whicli it occurs among the Lammennuirs. These liills must unqucstionaljly 
have been covered by it ; and hence the denudation of the south of Scotlaud 
will eventually be shown to be one of the greatest whicli this coiuitry has under- 
gone. The author concluded by sketching the physical geography of South 
Scotland during the Upper Old Red Sandstone period, in so far as it was in- 
dicated by the facts presented in this paper. He showed that the rate of sub- 
sidence was probably much greater in the eastern than in the western districts, 
inasmuch as the whole of the vast series of Upper Old Red and Lower Car- 
boniferous sandstones had accumidated iu the Lothians and Berwickshire 
before the base of the Lesmahagow hills began to be washed by the waves of 
tlie encroaching sea. 
February 1, 18G0. 
1. "On some Cretaceous Rocks in Jamaica." By Lucas Barrett, Esq., 
P.G.S., Director of the Geological Survey in Jamaica. 
On the north side of Plantain-Garden river, three miles west of Bath, shale 
and limestone overlie conglomerate. The limestone contains Inoceramus, Hip- 
jiurUes, and Nerinaa. Higher up the river similar fossiliferous limestone occurs 
iu vertical bands, succeeded by conglomerates, which separate it from massive 
porphyries. 
On the medial ridge of mountains, also, at an elevation of two thousand five 
hundred feet above the sea, Hippurite-limestone, with black flints containing 
Ven.tnciditcs, I'ests on porphyry and hornblende-rock. These igneous rocks are 
interstratified with shales and conglomerates. 
2. " On the Occurrence of a mass of Coal in the Chalk of Kent." By R. 
Godwin-Austen, Esq., F.G.S. 
This incce of coal was met with in cutting the tunnel on the Chatham and 
Dover Railway, between Lydden Hill and Shepherdswell. Tt weighed about 
four hundred weight, and was four feet square, with a thickness of four inches 
at one part, increasing to ten inches at another. It was embedded iu the chalk, 
where the latter was free from faults. The coal is friable, highly bituminous, 
and bums readily, with a peculiar smell, like that of retino-asphalt. It resem- 
bles some of the Wealdeu or Jurassic coals, and is iinlike the true coal of the 
coal-measures. Mr. Godwiii-Austiu stated his beUef that this was a block of 
. lignite or coal of the preceding Jurassic period lifted off by ice dui'iug the Cre- 
taceous period, and drifted away like the granitic boulder found in the Chalk 
at Croydon. 
3. " On some Eossils from the Grey Chalk near Guildford." By R. Godwin- 
Austen, Esq., E.G.S. 
In the east of the body-chamber of a large Nmttilus elegans, from the Greir 
Chalk of the Surrey Hills, near Guildford, the author found numerous speci- 
mens of Aphormis Parkinsoni, with fragments of THrriUfes taberctdatm. Am- 
monites Coupei, A. variam, and Inoceramus concentricus. The author believes 
that the specimens referred to were accumulated in the shell of the Nautilus, 
possibly by the animal having taken them as a meal shortly before death, at a dif- 
ferent zone of sea-depth to that in which the Nautilus and its contents sauk 
and became fossilized. Mr. Godwen-Austen referred to these specimens as 
being indicative of the contemporary formation of different deposits with their 
pccidiar fossils, at different sea-zones ; of the transport of the inhabitants of 
one zone to the deposits of another ; and as a possible explanation of the 
abundance of small angular fragments of mollusks, ecliiuoderms, and crus- 
taceans, in the midst of the very finest Cretaceous secUmeut. 
