Temperature of the River Xith. 



239 



II. — A Year's Observations of the Maximum and Minimum 

 Temperatures of the River Xith at Dumfries, and its 

 Estuary at Glencaple. By Rev. W. Andson. 



(The observations at Dumfries made by Mr Andson, assisted 

 by Mr W. Dickie and Mr Cunningham, boat-hirer; and at Glen- 

 caple by Rev. Jas. Malcolm, assisted by Capt. Hunter.) 



After referring to similar observations made by him, and 

 recorded in the "Transactions," Mr Andson explained that the 

 present were made at the request of Mr Calderwood, In- 

 spector of the Salmon Fisheries for Scotland, and the method 

 adopted was in accordance with his suggestion, i.e., two self- 

 registering thermometers were used ; the one maximum and the 

 other minimum ; kept constantly in the water below the boat- 

 house landing stage on the Xith near the X'ew Bridge, and daily 

 or almost daily examined. The following table was submitted, 

 followed by the succeeding remarks : — 



Tabular View of Temperatures of River JVith and its Estuary, along with 

 that of the Air, for a year from 1st June, 1901, to 31st May, 1902. 



If we compare the river temperature observations with those 

 of the shade temperature of the air, which may be reckoned as 

 that of the land, we find in one respect a great difference. I 

 mean in the range of temperature in the two sets of observations. 

 The rantce of the river observations is much more limited than 



