510 S, V. WOOD, JXJN., ON THE NEWEE 



rise 175 feet, it gives for the south-westerly increment 2*5 feet per 

 mile, or the same as that traced in Stage II. From this limit in 

 Sheet 62 the line of the gravel e falls in a corresponding way towards 

 the Wash. In Sheet 63 its elevation seems much the same as in 53, 

 and for it I rely on the observations of Mr. Harrison, of the Leicester 

 Museum, who has kindly done some field-work for me there, and 

 whose measurements of altitude have been by aneroid. Here also c is 

 much preserved beneath the Chalky Clay, cut through, nevertheless, 

 by the plunge of the clay into the valley of the Soar, in accordance 

 with this feature, as I have described it elsewhere. The highest 

 point at which he found gravel was Saddington, 464 feet. This, 

 however, may perhaps be the gravel c emerged before the moraine 

 reached it and left uncovered by it, or it may be the gravel h\ or 

 possibly, as it is on one of the islands in the south-east of the sheet*, 

 gravel of the ice melting (^') ; but at 376 feet, at Kibworth, was a 

 section of sand and gravel uncovered by the Chalky Clay, and con- 

 taining masses of that clay imbedded in it. In the various sections 

 which he found, only those at Oadby, in the east centre of Sheet 63, 

 at 320 feet, showed the Chalky Clay clearly overlain by sand or 

 gravel, which in one instance lay irregularly several feet deep on 

 the clay, while in another the clay passed up into a sandy bed full of 

 quartz pebbles and flints, which agrees with the description Mr. 

 Wilson gives of the passage upwards of the Chalky Clay into the 

 quartzite gravel near Eugby. In this district the gravel lies close 

 up to the water-parting between the Welland and Avon at Husbands 

 Bosworth, as well as to the partings between the tributaries of the 

 Soar, a part of the Trent system, and those of the Swift, a part of the 

 Severn system, and maintains much about the same elevation which 

 it does around Eugby. 



Mr. Mackintosh mentions finding the Chalky Clay on the Triassic 

 escarpment near Gainsborough (in the north-west of Sheet 83) 

 passing up into quartzite gravel f. This clay, I presume, is an ex- 

 tension of the patch shown by me in the south-west of Sheet 86 ; 

 and the gravel, like that crowning the Jurassic escarpments in that 

 sheet (but most of which rests on the Jurassic rocks directly), to be 

 the deposit of the sea entering the drainage-system of the Lower 

 Trent after its vacation by the ice. 



North-east from 63, through Sheet 71, and as far as the west of 

 70 (in consequence of failure of health before I could work this area) 

 I have not been able to collect other evidence as to gravel covering 

 the Chalky Clay. In the centre of Sheet 83, however, Mr. Eome 

 and I found an extensive formation of gravel setting in at the 

 western edge of the westernmost of the two lines of small patches 

 of the Chalky Clay running northwards through that sheet and 

 spreading out extensively in the west of Sheat 86, where, as just 

 said, it crowns the Jurassic escarpment. This begins a little north 

 of Lincoln, in the valley of the Lang worth, at an elevation of less 

 than 100 feet, whence it rises northwards. It seemed to pass 



* See Note, p. 527. t Quart. Journ, Geol. See. vol. xxxvii. p. 185. 



