Tol. 70.] THE DISCOVERY OF THE PILTDOWX SKULL. 



83 



All fossils found by us (with the exception of the remains of 

 ■deer) were discovered or have been traced to this third dark bed. 

 • The dark bed rests unevenly upon a fourth, which we identified 

 this year. It consists of very pale-yellow, finely-divided sand and 

 clay, and appears to be a sort of solidified mud reconstructed from 

 the Wealden strata beneath it (Tunbridge Wells Sand, Hastings 

 Beds). This fourth stratum, less than a foot thick, has so far 

 proved unfossiliferous, but contains flints of a much larger size 



Fig. 1. — Section" of gravel-bed at Piltdown (Sussex). 

 Approximate scale =1/24 of the natural size. 



Surface-soil, with occasional ) 

 iron-stained subangular flints, L ^ 

 flint-implement? of all ages, C 

 and pottery. Thickness=l foot/ 



Pale-yellow sandy loam, 

 with small lenticular patches | 

 cf dark ironstone-gravel and I 

 iron-stained subangular flint-». ' 

 One Palaeolithic worked flint 

 was found in the middle of 

 this bed. Thickness=;2 feet 

 6 inches. 



x Dark-brown ferruginous^ 

 gravel, with subangular flints 

 and tabular ironstone, Plio- 

 cene rolled fossil*, and Eo- 

 anthropus-rem&ins. Castor, y 

 etc, 'Eoliths' and one 

 worked flint (PI. XIV, fig*. 

 I & 2). Floor covered with 

 depressions. 18 inches. ) 



Pale-yellow nnely-divided^v 

 clay and sand, fo ming a mud I 

 reconstructed from the under- j * 

 lying strata. Certain suban- \ " 

 gular flints occur, bigirerthan [ 

 those in the overlying bed- I 

 Thickness —6 inches J 



Undisturbed strata of the 

 Tunbridge Wells Sand (Hast- 

 ings Beds, Wealden). 



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than any of those'in the overlying'strata. These big buff-coloured 

 flints vary from 6 to 15 inches in length by 3 to inches 

 in width. They are usually flat on one side and uneven and 

 hummocky on the other, which gives them a very characteristic 

 appearance. As they lie in the bed their flat sides are uppermost, 

 and where they impinge upon the bed above they are deeply 

 stained with iron. They are thickly patinated, and saturated to 

 the core with iron. 



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