354 ME. W. HILL ON" THE LOWER BEDS OE THE UPPER 



The uppermost pink band, 6 ft. thick, noticed by all observers of 

 the Speeton cliffs, is, near Xanny Goat's House, about 40 feet above 

 the preceding, and immediately overlies the " Grey Bed." As before, 

 it is the marl which is of the deeper colour, the nodules being 

 only faintly pink. The base of the colour-line is seen here to vary 

 as much as 2 feet in a few yards. Passing now to the eastward, 

 this colour-band can be followed at intervals in the face of the cliff, 

 and it appears to vary in its intensity ; but from its inaccessible 

 position it cannot be easily examined. 



ISTearly a mile to the east it reaches the beach, and it is then seen 

 that the band of bright pink, now about 8 ft. thick, underlies the 

 " Grey Bed," there being no coloration above it. The chalk below 

 the Grey Bed is fairly smooth and the colour pervades the whole of 

 the material equally. Some 100 yards only further to the east the 

 whole of the colour is abruptly lost. 



An instance of the sudden alteration of the colour is seen between 

 two extensive falls of the cliff a little nearer " JN'anny Goat's House." 

 Here the colour-band, 8 ft. thick, dies away near the centre, leaving 

 a kind of gap ; above the thick bed and separated from it by an 

 interval of about 2 ft. are two tongue-like strips of bright red, in 

 the centre of which are patches of orange-brown (see fig. 2). 



Pig. 2. — Section in Si:)eeton Cliffy near Nanny Goat's House. 



rtrzr- a 



ivi> - o» eot,"^-^^: 



5=> cr^ -a V <o o o.^^^; 



a. Very rough nodular chalk, "with marl bands. 

 h. Bright pink chalk. 



c. Grey, rather rough chalk. 



d. Pink chalk. 



From these facts it is evident that the colour-bands are hable to 

 sudden alteration of their stratigraphical position, and cannot be 

 relied on as indicating a particular horizon. 



Minute Structure. 



The specimens from the examination of which the following details 

 are drawn up number about 70. The points from which the series 

 was obtained are sometimes widely separated, but the results of their 

 investigation are of some interest. 



