Reports and Proceedings—Geological Society of London. 233 
for the most part obtained in Kentucky and Tennessee, in passage- 
beds between the Trenton and Hudson River formations, apparently 
on the horizon of the Utica Shale, which in these States is not dis- 
tinctively developed as a bituminous shale, the same as in New 
York and Canada. There is a definite horizon in Franklin County, 
Kentucky, in which they are associated with beds of cherty 
limestone, the chert being restricted to the bands in which the 
sponges occur. Their condition of preservation is as a rule un- 
favourable, and much credit is due to Mr. Beecher for having finally 
determined their structural characters. 
ISIS OissyS) CNANb) J 1 VOCs (eis. 
—+>—_ 
GroLtocicaL Socitrry or Lonpon. 
T.—March 6, 1889.—W. T. Blanford, LL.D., F.R.S., President, im 
the Chair.—The following communications were read :— 
1. “On the Subdivisions of the Speeton Clay.” By G. W. 
Lamplugh, Esq. Communicated by Clement Reid, Hsq., F.G.S. 
This paper gave the results of a long series of observations made 
during favourable opportunities at the cliff-foot and on the beach at 
Speeton from 1880 to 1889. The chief points brought forward by 
the author were as follows :— 
The sandy blue shales now seen in the cliff near Filey are not in 
place, but are erratics in the Drift, and most, if not all, of them are 
derived from the Lias. 
The bituminous shales with Belemnites Owenii, classified as Upper 
Kimeridge, extend upwards to the Coprolite-bed and the beds 
described as Portlandian by Prof. Judd, having been wrongly 
placed in this part of the section. No unconformity is traceable at 
the Coprolite-bed, or at any other horizon, between the Jurassic and 
Cretaceous portions of the clays. 
The clays may be most conveniently divided into zones by refer- 
ence to the Belemnites, as follows :— 
Marly shales below the Red Chalk = zone of B. minimus and 
allies. 
Upper division of the “ Neocomian,” including the ‘“Cement- 
beds,” and part of the Middle Neocomian of Judd =zone of B. 
semicanaliculatus and allies. 
Lower division of the Neocomian from the top of the Pecten 
cinctus zone down to the base of the supposed Lower Neocomian 
zone of Ammonites noricus = zone of B. jaculum. 
From the base of the noricus-zone to the Coprolite-bed = zone of 
B. lateralis (zone of Amm. Astierianus of Judd). 
The bituminous shales below the Coprolite-bed = zone of B. 
Owenii and varieties. 
The clays of the zone of Bel. lateralis have strongly marked 
Jurassic affinities, and it is from this zone that the coronated Am- 
monites were obtained, these being the beds supposed by Leckenby 
to be of Portlandian age. A very well-marked band of nodules, 
