Notes on the Drift Deposits. 413 



Sept. 19, 1849. — Sarum. See gravel on Alderbury Hill, said to 

 [be] different and better than any for 20 miles around. 



Tiie gravel at the abandoned Andover railway consists almost 

 entirely of some large but mostly small angular white flint-pebbles, 

 with 2 or 3 per cent, of black pebbles (some broken) and traces of 

 sandstone in bits, embedded in brickearth, this latter sometimes 

 pui'e, at other places the gravel being all of a mass and loose. 

 Below this is a chalk-rubble of Chalk and a few angular flints, and 

 with many small white flat pebbles. The general section of these 

 valleys would be thus [diagram showing Alderbury Hill as Hill 

 gravel]. All the valleys in the district, such as the valley of the 

 Romsey river and that of the Southampton and Winchester rivers, 

 appear gorged with gravel. Also in the valley at Dean, where it is 

 underlaid by a chalk-rubble. 



[In his paper on the "Westleton Beds, Part III, Quart. Journ. Geol. Soc, vol. xlvi, 

 pp. 176, 181, Sir J. Prestwich is inclined to regard the Alderbury gravel as an outlier 

 of Westleton Shingle. Eolithic implements have been found in the Alderbury gravel 

 by Dr. H. P. Blackmore.] 



December, 1845. — Section at Studland. 



[Base of / Light-coloured laminated grey and brownish clay. 



Bagshot Beds.] \ Light -coloured sands. 

 [London Clay, etc.] Gap, section hidden, apparently clays. 



SFine white sand, 2 to 3 feet ? 

 Bull-head flints, consisting of a conglomerate of large 

 angular flints, small flint pebbles, and small quartz 

 pebbles, in greenish clay and compact iron-sandstone. 

 Chalk. 



[The Lower Eocene strata at this locality have not been described 

 in detail owing to the general obscurity of the coast-section. See 

 also J. S. Gardner, Quart. Journ. Geol. Soc, vol. xxxix, p. 208 ; 

 C. Reid, ibid., vol. lii, p. 490.] 



No Date. — Section on the Chalk hill above the tunnel on the 

 Dorchester and Weymouth Kailway : — 



Irregular mass of rolled white flint-pebbles, some of a very large size 



(1 foot in diameter) , and angular flints with the edges abraded. 

 Irregular mass of yelloAV sand, layers of gravel (roughly stratified) as 

 above, but finer, and white pipe-clay full of grains of quartz ; 

 quartz pebbles abound in the gravels. The flints are generally 

 white all through, a few only are black in and out. 

 The line of separation [between the gravels] is very uncertain. 

 [Total thickness marked 60 feet. Bedding approximately horizontal.] 



[See also Prestwich, Quart. Journ. Geol. Soc, vol. xxxi, pp. 40, 41 ; 0. Fisher, 

 Geol. Mag., 1896, p. 246; A. Strahan, ibid., p. 334; C. Eeid, Quart. Journ. 

 Geol. Soc, vol. lii, p. 494.] 



N. D. — Crewkerne, Drift on Chalk hill one mile south of. Green 

 clay with black portions, and angular fragments of flint coated 

 black, passing into a fine breccia of very small fragments of Chalk 

 in the green clay ? 



Fragments of Inocerami, hard, not effervescing, in red clay from 

 gravel on the hill 1^ mile north-east of Crewkerne. [Composition 

 of gravel : — ] 



