736 PROF. REYNOLDS AND MR. VAUGHAN ON THE | Noy. 1902, 
Note on the Cephalopod-Bed and Sands. 
From the similarity of the hard sandy beds in which Ammonites 
radians occurs to those which contain Amm. striatulus, we had 
regarded this ammonite as characterizing one of the hard beds 
in the sands below the Cephalopod-Bed. We were apparently 
strengthened in this conclusion by the absence of any rocks of 
similar character, from among the very numerous labelled specimens 
of the Cephalopod-Bed preserved at the office. All the specimens had 
the typical ironshot character, and included fossils from the three 
beds already enumerated. 
Mr. Buckman, however, informs us that he is convinced that the 
adians-Bed should be placed in the Cephalopod-Bed, and suggests 
the following descending vertical sequence :— 
Opalinid-Beds......... 
leg 
Cynocephala-Beds ... ; tronshot. 
Radians-Beds .......4 Sands. 
(Lima &) Dispansus-Beds ...... Tronshot. 
Striatulus-Beds ...... Sands. 
He cites the following section trom North Stoke (near Bath) to 
illustrate the occurrence of sandy beds below the horizon of Ammo- 
nites opalinus and above that of Amm. dispansus. This section, not 
previously published, is here given by Mr. Buckman’s kind 
permission :— 
Section at Nortu Stoxe, 1895, by Mr. 8. S. Buckman, F.G.S. 
Feet Inches. 
Uprer Trreonta- f Tronshot earthy stone and marl. } 0 6 
Grit. |  Terebratula subspheroidalis, Upton. 
( Yellowish-grey sandstone. 1 3 
i Dumertieria, Lithodomus. 
| Yellow sands and some rock. i) 
ft4p1ANS-BEDs. 4 Hard grey sand-rock. \ 1 4 
Fragments of Dumortieria or Catul- 
loceras. | 
(Bands oh in-wsckehter cesantet- aes ee eee 1 6 
( Yellowish ironshot earthy stone. fl 
Grammoceras dispansum; Hamma- 
BA Pi | b,3 toceras aff. insigne ; Lytoceras aff. 
DispAansvs-BEDs. Germainet. : | 
Yellowish-brown marl. \ 
Grammoceras dispansum. 
Yellow sands much concealed ......... 
' Yellow sands. | 
J 
ee ee ee 
STRIATULUS-BEDS. 
_— 
Ore & 
SS) tS) 
| Yellow sands. 
(e) The Inferior Oolite. 
Lying, as it does, between the well-marked Opalinid-Bed and the 
clays of the Fullers’ Earth, the thickness of the Inferior Oolite is 
easily estimated (from the labelled specimens) to be about 70 feet. 
The vertical succession of the different beds which make up this 
