Some Notes on the Hydrology of the Cotteswolds and the District 
around Swindon. By Joun H. Taunton, M. Inst. C.E., F.G.S. 
A lengthened residence in the neighbourhood of the Cottes- 
wolds, associated with professional pursuits in the district, as 
well as in North Wilts, has led to the collection of various 
Hydrological facts and many observations that may be of 
interest to the Cotteswold Club, and which may possibly be 
usefully placed among its archives. 
Accordingly in this paper I propose generally to consider 
those streams which, rising in the Cotteswolds and flowing 
south-east and eastwards, constitute, in conjunction with the 
tributaries rising in the hills south of Swindon that flow almost 
due north, the Early Thames at Lechlade; then I will make 
some remarks on the two streams the Chelt and the Frome that 
break through the escarpment of the Cotteswold chain, flowing 
westwards towards the Severn. 
T shall not weary you with any long statements of rainfall 
in the districts referred to, my observations having rather 
reference to the Ontology, or actual flow of the streams as I 
have found them, than to the Deontology, as deducible from 
rainfall; still as the amount of rain falling constitutes an 
important element in the general subject, and its record may 
be advantageously placed among our papers, I annex rainfall 
observations made at or in the neighbourhood of Thames Head 
between 1845 and 1886, (Tables Nos. 1 and 2.) Similar ones 
at Brimscombe Port between 1861 and 1886, (Table No. 3.) 
