92 REPORT—1890. — 
Third Report of the Committee, consisting of the Hon. Rapa 
ABERCROMBY, Dr. A. BucHan, Mr. J. Y. Bucwanan, Mr. J. 
WIiLLis Bunp, Professor CurystaL, Mr. D. CunnincHamM, Pro- 
fessor FITZGERALD, Dr. H. R. Mitt (Secretary), Dr. JOHN 
Murray (Chairman), Mr. Isaac Roserts, Dr. H. C. Sorsy, 
and the Rev. C. J. Stewarp, appointed to arrange an 
investigation of the Seasonal Variations of Temperature in 
Lakes, Rivers, and Estuaries in various parts of the United 
Kingdom in co-operation with the local societies represented on 
the Association. 
As in previous years, the work of this Committee was carried on by cor- 
respondence and by occasional informal meetings of a few of the members. 
The Committee was reappointed at the Newcastle meeting of the Asso- 
ciation in 1889 without a grant, and its work has been carried on at the 
expense of the Secretary. Four new observing stations were instituted, 
and regular observations have been carried on at thirty, at least, of the 
stations existing at the date of last report. 
Most of the original observers for the Committee have, for various 
reasons, been obliged to cease observing, and many of them, on account of 
their other duties, have only been able to keep occasional records of tem- 
perature. Mr. G. Taylor, gardener to His Grace the Duke of Argyll, at 
Inveraray, and Mr. J. Paterson, Almond Bank, commenced the daily 
observation of temperature in rivers at the beginning of January 1888, 
and are prepared to carry on the work. Thanks to the interest taken in 
the subject by many of the Corresponding Societies cf the Association, a 
number of very valuable records are now being obtained, with a continuity 
and completeness which could not be expected from unattached observers. 
The Dumfries and Galloway Natural History Society, through the Rev. 
Wm. Andson, an enthusiastic meteorologist, has accumulated many data 
regarding the rivers Nith and Dee and their estuaries in the Solway Firth. 
Mr. Andson has discussed and summarised the earlier observations in a 
very interesting paper presented to his Society. ‘he Bristol Channel, 
analogous in many respects to the Solway, has received attention from 
the Bristol Naturalists’ Society and the Cardiff Naturalists’ Society, each 
of which employs several observers, the former having the English and 
Welsh Grounds Lightship and the latter the Breaksea Lightship as 
observing stations. The Hast Kent Natural History Society maintains 
observations on the Stour and the Medway, and Colonel W. H. Horseley, 
R.E., who takes a keen interest in the subject, has sent in a valuable sam- 
mary of the results already obtained to the Committee. The Manchester 
Geological Society has printed the complete series of observations made 
under its auspices by Mr. W. Watts, F.G.S., on the Denshaw and Piethorn 
reservoirs, near Oldham. Mr. J. Reginald Ashworth, of the Rochdale 
Literary and Scientific Society, has made similar observations on the 
reservoirs at Cowm, Clay Lane, and Springmill, and Mr. Eunson has 
made an admirable comparison of the temperature of the Northampton 
reservoir and the river Nene, under the auspices of the Northampton 
Natural History Society. Mr. H. Preston, for the Grantham Scientific 
Society, and Mr. F. KE. Lott, for the Burton-on-Trent Natural History 
Society, are investigating the conditions of their neighbouring rivers. 
The Marlborough College Natural History Society has also undertaken ~ 
