422 
EXCURSIONS. 
After breakfast at Whitby, the members walked along 
the foot of the cliffs by the harbour and examined the alum 
shales of the Upper Lias. 
Proceeding along the Scars in the direction of Saltwick 
the Dogger was next examined, with a view to ascertaining 
the conditions under which it was deposited. 
The Dogger contains fragments of ammonites derived from 
the underlying Liassic beds. Some difference of opinion has 
arisen as to the exact portion of the Lias from which these 
fossils have been derived, and a number was collected with a 
view to their subsequent identification and the possible clearing 
up of the matter. 
At the top of the Alum Shales a number of fossil roots was 
found ; these appeared to be connected with a vertical trunk 
which penetrated the overlying Dogger. It is intended to make 
a small excavation for the purpose of demonstrating whether 
or no the roots are actually connected with the trunk, as several 
matters of considerable interest would be raised if this were 
found to be the case. 
Some months ago Mr. Harold Brodrick, a member of the 
Society, found some reptilian footprints on a fallen block of 
sandstone in the Saltwick Alum Quarries, but was unable to 
determine the exact horizon from which the block had fallen. 
Those attending this excursion were more fortunate, several 
similar footprints being found on recently fallen blocks midway 
between the East Pier at Whitby and Saltwick Nab. The 
fall had left a fresh scar on the cliff face, and by this means it 
was possible to determine the position of the footprint bed. 
The bed is, however, in an inaccessible position near the summit 
of the cliff", so that it was impossible to observe the impressions 
in situ."^ 
The largest impression observed was about 12 inches in 
length, which would point to the creature which made it being 
at least 12 feet in height. The footprints were those of the 
hind feet only and were associated in one instance with 
* The actual bed with footprints in situ and associated with the 
fresh-water lamellibranch Unio has since been found by Prof. Kendall and 
a party of undergraduates of the University of Leeds. 
