16 PROF. T. G. BONNET AND REV. E. HILL ON THE [Feb. I9OI, 



exhibited by a pit west of the Crampas-Sassnitz railway-station, 

 because it proved the tripartite Drift to lie on the slope of an old 

 Chalk- hill at a fairly high angle, and the flexures are shown by the 

 flints to have been in existence when that Drift was deposited. 

 In 1899 we found that the pit had beeli worked back for some 

 distance (on the left-hand side of our diagram), just at the part 

 which the previous year was obscured by mud and chalk-dust. "We 

 then called attention to a thickening of the Drift-material on the left 

 of the summit^ (ISTo. 5 in fig. 3, op. cit. p. 315)~ as 'apparently a 

 fiUed-up pit.' It was, however, now seen to be something far more 

 important, namely, a head of a shallow Drift-filled valley, of which 

 a fairly good section was exposed. Pig. 11 (p. 17) represents as 

 careful a sketch as we could make (verified by a traverse). Con- 

 fining our attention for the moment to the Drift, we see that the 

 three members, which on the more eastern side of the hill repose 

 uniformly on a fairly steep slope of Chalk, are here dropped down 

 (at the northern end of the quarry) into a valley some 30 feet deep, 

 bounded on its western side by a slight cliif of Chalk, at the bottom 

 of which an horizontal fissure is exposed, filled partly with clay 

 and partly with sand. The arrangement of the several beds, their 

 distortions and dislocations, more visible in the sand than else- 

 where, suggest that they have been let down into the valley from 

 an horizontal position above it. We may add that here also the 

 surface of the Chalk is dipjoing rather steeply beneath the Drift 

 (that is, away from the spectator), and that no loose unworn flints 

 are anywhere found at the base of the latter. Above the upper 

 clay are clay and gravelly sand; but this part of the section was so 

 much masked by slight slips and ' wash-over ' that (as the foreman 

 objected to our lingering here) we will not venture to say more 

 than that the Drift in this, as in some other sections, consists of 

 more than three members.^ We may add that the Chalk a little to 

 the left is only covered by surface-soil, and no trace of the buried 

 valley can be seen on the hill-slope at the back of the drawing. 



We have included in our sketch a little more of the Chalk 

 exposed in the pit-wall, because our former one did not sufiice (as 

 we had anticipated it would) to lay the ghost of the ' great ice- 

 plough.' We had endeavoured to make it clear in our last paper 

 that no evidence could be found in Riigen to support this hypo- 

 thesis, while there was much hostile to it. We shall be ready to 



^ This, according to an aneroid measurement, is about 140 feet above sea- 

 level. The Cram pas terrace (R. Oredner, Forsch. z. Deutsch. Landes- u. 

 Volkskunde, vol. vii, 1893, p. 429) is nearly 100 feet above sea-level. 



2 This was examined two months later by Herr A. Baltzer (Zeitschr. 

 Deutsch. Geol. Gesellsch. vol. li, 1899, pp. 558, 559 & figs. 2, 3). The latter of 

 these figures corresponds with the upper part of that given in our last paper 

 (op. cit. p. 315, fig. 3), but does not show so plainly the tripartite division of 

 the Drift ; the former indicates that the working had already been carried 

 back far enough to show the real significance of the ' apparently fiUed-up pit/ 

 which was quite indeterminate Avhen we saw it; but in 1899 further working 

 had exposed still more, as is represented in our drawing (fig. 11). 



3 Hence, either the Lower ' Diluvium ' must sometimes consist of more than 

 three members, or the Upper be also aff'ected by this disturbance. 



