RECOMMENDATIONS. 
123 
fields of Worcestershire, Shropshire, Staffordshire, Cheshire, 
Lancashire, and the South Western part of Yorkshire. 
That inquiries should be made as to the existence of the 
Wealden formation in the midland counties of England, and 
particular attention paid to the character of the Organic Re¬ 
mains. 
That a detailed examination of any River in Great Britain 
should be instituted ;—with a view to compare the outline of its 
bed, with that of the valley in which it runs. 
That the quantity of Mud and Silt contained in the water of 
the principal rivers in Great Britain should be investigated ; 
distinguishing, as far as may be possible, the comparative quan¬ 
tity of sediment from the water at different depths, in different 
parts of the current, and at different distances from the mouth 
of the river; distinguishing also any differences in the quality 
of the sediment, and estimating it at different periods of the 
year ;—with a view of explaining the hollowing of valleys, and 
the formation of strata at the mouths of rivers. 
That the experiments of the late Mr. Gregory Watt, on the 
fusion and slow cooling of large masses of Stony Substances, 
should be repeated and extended by those who, from proximity 
to large furnaces, have an opportunity of trying such experi¬ 
ments on a large scale ; and that trial should be made of the 
effect of long-continued high temperature, on rocks containing 
petrifactions, in defacing or modifying the traces of organic 
structure. 
That the Members of the Association be requested to insti¬ 
tute experiments, for the purpose of ascertaining whether the 
continued action of steam or of water at a high temperature, 
is capable of dissolving or altering minerals of difficult solution. 
That a request be made to the Board of Ordnance, that the 
scale of colours adopted in the geological colouring of the 
Ordnance Maps may be published for general information. 
Committee for Zoology, &c. 
The Committee recommend, That Reports should be applied 
for by the Association on the following subjects : 
On the recent progress and present state of Zoology. 
On the recent progress and present state of Animal Physio- 
