474 S. V. WOOD, JFN., OIT THE NEWER 



the northern slope from the chalk escarpment of the Weald ; and, 

 according to the Geological Survey memoir, this caps the Lower 

 Tertiary outliers at Headley (in the east centre of Sheet 8), which 

 attain elevations of 618 and 627 feet. 



Within the Wealden chalk escarpment, and resting on the Neo- 

 comian, there occurs another patch of this gravel on Bowling-green, 

 near Limpsfield. I owe my knowledge of this only to Mr. Topley, 

 of the Geological Survey, who mapped that district, and who in- 

 formed me that the gravel was made up chiefly of Lower Tertiary 

 pebbles and subangular flints, and that its elevation, he estimated, 

 was between 400 and 500 feet. It is shown in the Geological 

 Survey map. Sheet 6, and lies about 9 miles south-west of Well 

 HiU. 



Proceeding westwards, along the northern escarpment of the 

 Weald, we find an extensive sheet of this gravel spread out in 

 North Hants. That portion of it which lies in the north-west 

 corner of Sheet 8 extends up to the edge of the Wealden excavation, 

 for one patch of it overlooks and commands that excavation, lying 

 at an elevation of about 600 feet at Ca3Sar's Camp, near Aldershot 

 (see figs. II. and III.). South-west from this, and stretching 

 as far as Meadsted in the south-east corner of Sheet 12, this sheet 

 of gravel spreads out at high elevations over the chalk which bounds 

 the Wealden excavation here and forms the parting between the 

 drainage to the Thames and that to the Southampton water. In 

 the railway-cuttings it is of very irregular thickness and full of 

 large subangular flints reaching the size of a bullock's head. Prom 

 this point to the extensive sheet of gravel in South Hants the chalk 

 country, occupying for the most part lower elevations than those 

 reached by the gravel on either side of it, has been so denuded that 

 the cuttings of the railway which traverses it from Basingstoke, in 

 the IN'.E. of Sheet 12, to beyond Winchester in the north of Sheet 11, 

 are quite bare of gravel, though the tops of most of them are below 

 400 feet. On the cuttings of the railway that branches off from 

 Basingstoke to Salisbury, however, at about 400 feet, a few small 

 patches do occur, not far from the junction of the railways. 



The South Hants, or New-Porest sheet, is delineated in the map 

 to Mr. Codrington's paper, page 528, of vol. xxvi. of the Quarterly 

 Journal, and it occupies parts of the south-west corner of Sheet 11 

 and south-east corner of Sheet 15. Only small portions of this 

 gravel formation of South Hants, viz. those of the highest eleva- 

 tions, belong to the stage now under consideration; the rest has 

 (except so far as the lower layers of it may represent the gravel at 

 higher elevations) accumulated rluring those successive stages of 

 emergence which are described hereafter. Their relative positions 

 appear in fig. Y. The highest elevation attained by any portion of 

 this gravel in South Hants appears to be Bramshaw Telegraph Hill, 

 in the east of Sheet 15, which Mr. Codrington gives as 419 feet. 

 Westward from this gravels occur at high elevations towards the 

 south-western extremity of England, patches of gravel, composed of 



