46 Yorkshire Naturalists’ Union: Annual Report, 1914. 
of Pickering, proved very successful. Near Flixton the party 
stayed some time to work at a section showing the Black Marls. 
which divide the Middle from the Lower Chalk. Afterwards a 
ramble of four miles or so along a winding chalk valley was greatly 
enjoyed, especially so by many of those who for the time first 
made their acquaintance with typical Wold country. 
AskricG.—In Whitfield Gill and neighbouring ravines, 
geologists saw the sections which eighty years ago Phillips 
adopted as a standard of reference for the Yoredales of the 
Carboniferous system, while between Bainbridge and the top of 
Addleborough, a complete sequence from the ‘ Great Scar’ to the 
‘Underset ’ Limestone could be studied. Splendid views were 
obtained from Addleborough and Stake Fell. Semmerwater, 
which adds so much to the scenic charm of the district, was 
probably formed by a lateral moraine of the Wensleydale glacier 
damming up the outlet of the tributary valley. 
SLEIGHTS FOR ESKDALE.—Lias Alum shales were inspected, 
but as the main attraction of this excursion was glacial geology,. 
the picturesque valley of the Esk in the neighbourhood of Glaisdale 
Egton and Little Beck was explored with that object in view. 
Jurassic FLORA ComMMiITTEE.—Mr. J. J. Burton writes :— 
During the year now ending the work has been chiefly amongst 
the Thinnfeldia and Nilssonta beds at Roseberry Topping, and 
in the main escarpment to the East. A number of fresh localities 
have been tried but no new forms have been observed. There 
is a rather promising bed on the Eston escarpment which will 
in the near future be more carefully worked. Such evidence as 
has been obtained seems to indicate that the plants grew in 
colonies and that there was a predominance of particular species 
in each locality. An immense quantity of material has been 
accumulated and is now at Cambridge undergoing identification.. 
and classification, and until this work has been accomplished 
it is proposed to devote more time to the discovery of new deposits 
than to collecting. 
GLACIAL COMMITTEE.—Mr. J. J. Burton, F.G.S., writes :— 
“The great landslip on Roseberry Topping has brought down 
many blocks of sandstone with well marked glacial strie. The 
altitude from which they have been brought down is uncertain. 
I observed them in the moving mass of debris of about 750-770 
feet. Most of them have again been covered up. One remains 
in situ having merely had the cover of surface soil removed. 
Mr. G. Sheppard, F.G.S., in The Naturalist for July, describes. 
and illustrates a fault which he recently observed in the Glacial 
Beds at Dimlington on the Holderness Coast. In his opinion 
the evidence shows that the dislocation took place when the 
whole mass was frozen. 
Naturalist, 
