Reports and Proceedings—G'eological Society of London. 375 
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GrotogicaL Socirery or Lonpon. 
J.—June 7th, 1893. — W. H. Hudleston, Hsq., M.A., F.RS., 
President, in the Chair.—The following communications were read : 
1.—<The Bajocian of the Sherborne District: its relations to 
Subjacent and Superjacent Deposits.” By S. S. Buckman, Hsq., 
E.G.S. 
This paper is partly the result of excavations made by Mr. 
Hudleston, F.R.S., and the author at Sherborne, to determine the 
position of the so-called ‘ Sowerbyi-zone.’ 
The author uses the term ‘Bajocian’ in a merely conventional 
sense to denote the lower beds of what has been called ‘ Upper part 
of the Inferior Oolite.’ He introduces a term emar (ap) as a chrono- 
logical subdivision of an ‘age,’ and considers the beds dealt with in 
the paper to have been deposited during 12 emata, which he calls, in 
descending order, fuscum, zigzag, Truellit, Garantianum, mortense, 
Humphriesianum, Sauzei, Witchellia sp., discites, concavum, brad- 
fordense, and Murchisone. 
A line from Stoford, Somerset, through North Dorset to Milborne 
Wick, Somerset, is the base-line of the district reviewed. Seventeen 
sections of places close to this line are given to show the relations 
of the beds, with the different amounts of strata deposited during 
successive emata, and during the same emar at different places. 
By means of Tables he shows that the area of maximum accumu- 
lation receded eastwards in the earlier emata, and then proceeded 
westwards during the later emata. A similar and corresponding 
faunal recession and progression is pointed out, though the faunal 
headquarters always remain west of the great accumulation of 
deposit. Adding the various maximum deposits together, the 
author finds as much as 130 feet of strata deposited during the 
twelve emata, = (practically) the ‘Inferior Oolite of Dorset.’ This 
is a far greater thickness than has hitherto been allowed to beds of 
this age in the district, but the fault lay partly in incorrect corre- 
lation. 
The Dorset strata are correlated with strata in other districts— 
namely, with those of Dundry and Leckhampton Hills in this 
country. Of these the author gives sections, pointing out the 
emata during which the strata of those localities were deposited, and 
making some alterations in their correlation. 
Passing to Wiirttemberg, the author shows that the equivalent of 
Waagen’s Sowerbyi-zone is exactly represented at Sherborne. Re- 
turning to Normandy, the author compares his results with the 
recent work done by Munier-Chalmas, who in some respects has 
made an even more detailed subdivision of the strata. Ina Table 
he shows the correspondence between his divisions for Dorset and 
those of Munier-Chalmas in Normandy and Haug in Southern 
France. 
2. “On Raised Beaches and Rolled Stones at High Levels in 
Jersey.” By Andrew Dunlop, M.D., F.G.S. 
