074 Reports and Proceedings—Dorset Natural History Olub. 
REPORTS AND PROCHEDINGS.- 
aon 
I.—Dorsret Narurat History anp ANTIQUARIAN Fretp Crus. 
Under the guidance of Mr. W. H. Hudleston, F.R.S., an interesting 
and instructive excursion was made by sea to view the cliffs of the 
Isle of Purbeck and their continuation towards Weymouth. Leaying 
Swanage soon after midday on July 9th, the party embarked on 
board the steamer ‘‘ Empress”? and proceeded northwards towards 
the Foreland to examine the famous thrust-fault in the Chalk of 
Ballard Down. Returning thence to Swanage the downward sequence 
of strata was observed from the basal Chalk, through the Upper 
Greensand, Gault, and Lower Greensand of Punfield to the broad 
stretch of Wealden sands, coloured clays and lignites of Swanage 
Bay. Onwards by Swanage to Durlston Head the Purbeck Beds 
were well seen, based on the stronger Portland rocks which front the 
sea westwards to St. Ealdhelm’s (St. Alban’s) Head and Emmit Hill. 
Here, as the Director pointed out, we see the effects of an anticline 
which brings up the Kimeridge Clay, while the Portlandian escarp- 
ment commences to wind inland, and after producing the eminences of 
Hound-tout and Swyre Head, passes in a noble sweep through 
Smedmore Hill and Tyneham Cap into the final precipice of Gadcliff. 
Attention was drawn to the features of the Kimeridge Clay, its ‘coal,’ 
its ledges formed by cement-stone bands, and the numerous faults. 
Beyond Gadcliff the diversified features of the coast attracted much 
attention. Here the rampart of Jurassic rocks has been broken 
through, and the sea reaches the vertical Chalk in Worbarrow Bay ; 
in Lulworth Cove, Man-of-War Cove, and other picturesque inlets, 
opportunity was taken to demonstrate the effects of denudation 
and of the remarkable disturbances to which the strata have been 
subjected. Westwards attention was drawn to the fine cliffs of 
Chalk and Upper Greensand of White Nothe, and the striking 
unconformity of Gault on the Purbeck, Portland Beds, and Kimeridge 
Clay below Holworth House. Thence to Weymouth lower strata 
were observed in the Corallian beds of Osmington and in the 
Oxford Clay which forms the low cliff north of the town. Thus 
ended a most enjoyable excursion in which the main features in the 
geology of Eastern Dorset, so grandly exhibited in the coast-sections, 
were viewed and explained under fairly favourable circumstances. 
About 120 members and their friends, including the President and all 
the executive, took part in it, and had the weather been less. 
threatening the attendance would, no doubt, have been more: 
numerous. 
IJ.—Gerotoetcat Socrery oF Lonpon. 
June 19th, 1907.—Aubrey Strahan, Sc.D., F.R.S., Vice-President, 
in the Chair. 
The following communications were read :— 
1. ‘“‘ The Inferior Oolite and Contiguous Deposits of the Baths 
Doulting District.” By Linsdall Richardson, F.G.S. 
