ON UNDERGROUND TEMPERATURE, 



177 



port a series of observations taken at Blyths-svood bore, no-w furnishes obser- 

 Tations taken with the thermometer above described at two other bores. At 

 Kii'kland I^euk bore near Blythswood, his observations were made m March 

 and April 1868, and again in August and September of the same year. At 

 South Balgray on the north side of the Clyde, his observations were made in 

 July 1869. The following are the particulars of the observations. 



Observations of Underground Temperature at Xiikland Neuk Bore, 



Bl}i:hswood, 1868. 



This bore was originally 570 feet deep, but was filled with sediment to 354 

 feet from the surface. During March and April the weather was rainy, and 

 a continual flow of water from the surface passed into the bore, escaping at 

 some unknown depth. The temperature observed varied considerably at 

 different times, especially towards the surface. Those here recorded were 

 taken when the surface-flow was least, the others have been rejected from 

 their irregularity as not trustworthJ^ 



In August and September the weather was dry, and the surface of the 

 water in the bore remained at a nearly constant depth of 30 feet, and the 

 temperatures observed are much more regular. 



An attempt was made to have the sediment taken out so as to render the 

 whole depth available for observation, when an accident occurred to the iron 

 tube protecting the upper part of the bore, and nothing further has been 

 done. 



Observations of Underground Temperature at South Balgray, west from 

 Glasgow, north from the Clyde. Diameter of bore 3 inches. 

 This bore, originally 1040 feet deep, is available to a depth of 525 feet. 

 The observations here recorded were made at the beginning of July 1869, 

 the sitrface of the water being constant at 5i feet from that of the ground. 

 Diameter of bore 3 inches. 



Depth, 

 feet. 

 60 .. 



Temp. 



Date. 



48-2 July2, 1869. 



48-2 „ 2 „ 



1869. 



Depth. 



feet. 



60 



Temp. 



Date. 



.48-22 July 6, 1869. 



48-20 „ 9 „ 



N 



