324 Yorkshire Naturalists at Great Ayton. 
On Saturday the geologists spent the day on the Whin 
Dyke, or Cliff Rigg, a prominent local landmark, and noted 
the physical changes produced in the lias shales, examined 
exposures thereof, and also of the Estuarines of the Inferior 
Oolite. Monday was devoted to an examination of Roseberry 
Topping, the conical height of ee is the dominating feature 
of the district. 
es Ni) 
Photo by) [Godfrey Bingley. 
The old school-house, Great Ayton, where Capt. Jas. Cook was taught. 
The other sections devoted Saturday to an investigation of 
Airyholme Woods, and afterwards in the neighbourhood of 
Slacks, Howden Gill, and Gribdale Gate. An examination 
was also made of the Whin Dyke and Roseberry Topping, where 
the fossil plant bed received much attention. On Monday they 
spent the whole of the day in the magnificent woods at Kildale 
and Easby. After a climb to the upper woods the extended 
view was obtainable of the pastoral plain of Cleveland with its 
‘Naturalist,- 
