Reports & Proceedings — British Association. 523 



implements have been found in high and low gravel-beds in the New 

 Forest, and coast finds are abundant from Poole Harbour to 

 Southampton Water. A section from Bramble Hill south-west to 

 the coast is given in Proc. Geol. Assoc, xxvi (1915), 4, suggesting 

 that the implement- bearing beds are part of a plateau deposit rather 

 than the terrace-gravel of a Solent river. 



2. The Chines of Bournemouth. By Henry Bury, F.G.S. 

 The country round Bournemouth consists of an almost level 

 plateau, intersected by numerous valleys, and some of the latter, 

 running down to the sea, are of a precipitous character, and are 

 distinguished under the name of "Chines". They are usually 

 described as having started as small gullies in the face of the cliff 

 and having worked back inland ; but the evidence seems to be 

 against this. Not only is there no sign of special activity at their 

 heads, but each is found to consist of an older valley with a U-shaped 

 section, and a newer one, shorter and narrower, shaped like a V- 

 The older valleys probably joined the Frome-Solent Biver about 1-2 

 miles from the present shore-line ; the newer ones owe their smaller 

 size to reduction in water-supply, and their steepness to the rapid 

 retreat of the shore-line under marine action. They are in fact 

 growing shorter, and not longer, and the final obliteration of some 

 of them may have helped to give rise to the belief that the cliffs 

 themselves are growing steeper. 



3. The Lithological Succession in the Avonian of the Avon 

 Section, Clifton. By S. H. Reynolds, Sc.D., F.G.S. 



Several previous workers have dealt with the lithology of the 

 Avon section, and in particular Mr. E. B. Wethered and the late 

 Dr. A. Vaughan. The results of the present paper are based in part 

 on field work, in part on the study of over 200 rock slices which 

 have been cut with the aid of grants from the University of Bristol 

 Colston Society. 



The chief rock-types occurring are the following, the horizons 

 being alluded to under the designation adopted in Yaughan's original 

 paper. 1 



Calcareous Rocks. 



Algal Limestones are abundant (a) in Km, (b) at the top of C2, 

 (c) in the lower part of S x , (d) in the pisolitic beds of the lower part 

 of S 2 , (e) in the " Concretionary Beds " of the upper part of S2 : this 

 is the most important development. 



Mitcheldeania and Solenopora are the most persistent forms ranging 

 from the base of K to the top of S 2 . Spongiodroma is the prevalent 

 form in the calcite-mudstones which are so abundant in C2 and S. 



Foraminiferal Limestones : Foraminifera first began to be fairly 

 common in Z2. They occur in great abundance in the upper part of 

 S 2 and the lower part of D x . 



Coral Limestones : Zaphrentid corals play an appreciable part as 

 limestone builders in Z u while bands full of Lithostrotion martini are 



1 Q.J.G.S., vol. lxi, 1905. 



