Yorkshire Naturalists at Saltburn. 337 
by Skelton beck. | Both streams have cut deeply through the 
clay and thus left this isolated mound to tell the story. 
Inland in Kilton Valley the sequence was further traced up 
to the Moor Grit but the luxuriant vegetation and the steep 
nabs, whilst adding so much to the beauty of the landscape, 
made it difficult to closely examine many of the exposed sections. 
It was, however, quite easy to trace the lithological changes in 
most cases and to study some of them in detail. The abrupt 
transition from shales to coal and sandstone, and the very 
irregular bedding, showing the influence of currents, were very 
noticeable ; as was also the very wavy or sloping line of some 
ot the beds, probably from having been laid down on a shelving 
bottom or being subjected to some lateral pressure whilst being 
consolidated. 
The plant beds on Roseberry Topping were also visited and 
the enormous landslip seen. Almost half this well-known 
conical hill has split away from the remainder and bodily slipped 
down to a lower level, leaving an extraordinary scene of con- 
fusion and mix up. The top consists of a heavy cap of Oolitic 
Sandstone resting on rotten vegetable beds, which again rest on 
friable shales, some of which are water-logged. On the sides 
under the accumulated detritus there is much saturated yellow 
brick-clay of the consistency of mortar. A fault running 
through the hill provides a line of weakness. Everything com- 
bines to produce an unstable equilibrium. Mining operations 
were also in progress, but as there was neither crushing of the 
pillars nor any sign of disturbance in the mine when the slip 
took place it is contended that such operations were not the 
cause of the slip. . 
The removal of the surface covering has exposed many 
blocks carrying well-marked deeply-cut glacial striz, some of 
which are still in situ, the direction of the strie being N.W. 
TOs. 
The great Cleveland Whin Dyke which cuts through a 
shoulder of Roseberry Topping was visited. The quarrying of 
the dyke for road metal has left a huge gaping chasm with 
vertical sides, giving it a very weird appearance. The dyke 
is generally considered to be of Tertiary age. - 
(To be continued). 
> 0 :— 
Among the contents of The New Phytologist, Vol. XIV., Nos. 6-7, for 
June and July, we notice ‘A Contribution to the Cytology and Life- 
History of Zygnema evicetorum Kutz., Hansg., with some remarks on the 
“senus’’ Zygogonium,’ by G.S. West and C. B. Starkey ; ‘ Preliminary 
Observations on the Pollination Mechanism of Avctotis aspera Linn., by 
James Small; ‘ The Inter-Relationships of Protista and Primitive Fungi,’ 
by F, Cavers; and ‘A Jurassic Wood from Scotland,’ by Ruth Holden. 
With regard to the last paper we notice reference to specimens being ob- 
tained from the ‘ Lias of Scarborough,’ which might be correct if there were 
Lias at Scarborough. 
1915 Oct. 1. 
