secretary's report. 
103 
overflow valley into Bilsdaie, and then began a long and tiring 
moorland tramp round the Ingleby Greenhow embayment. Botton 
Head tumulus, the highest point in Cleveland, was ascended ; 
an exposure of erect Calamites was examined, and some of the 
party had a peep into the beauties of Basedale. 
The meeting of the Yorkshire Naturalists Union was held 
in the schoolroom at Ingleby Greenhow, presided over by the 
President of the Union, Mr. AVm. West, F.L.S., of Bradford, 
and was attended by several of our members. 
A smaller party arranged an extra excursion on Tuesday, 
August 8th, under the guidance of Mr. P. F. Kendall, F.G.S., 
to the moorlands north of Eskdale, to examine the evidences of 
glacial action. From Commondale Station the route by the 
brick works was taken to High Moor, where exposures of gravel 
containing boulders of the northern type were examined. In 
the highest of these, about 810 feet above O.D., a small boulder 
of rhomb-porphyry was found by Mr. J. W. Stather.* Thence 
a traverse was made across Moorsholm Moor, and several interest- 
ing notch-like valleys were inspected cutting across the usual 
drainage. These valleys were explained as lines of drainage for 
the water along the ice-front at various stages in its advance 
and retreat. The return to Danby Station was made by a 
wide overflow valley, which must have carried a vast volume of 
water at the time of its excavation, but which is now peat- 
logged and hardly carries any running water at all. At the 
lower end of this valley of glacial overflow there is a great delta 
deposit reaching down towards Danby. After visiting a deposit 
of finely laminated mud at the Danby Brick Works, which had 
been deposited by the Eskdale extra-morainic lake, the party 
separated with hearty thanks to the genial and indefatigable 
leaders for the splendid series of excursions which they had 
arranged. 
* This boulder is figured in Dr. A. R. Wallace's "Studies, Scientific 
and Social," Vol. I., p. 86. No other Scandinavian boulder has been found 
at so high an altitude in England. — P. F. K. 
