68 



REPORT — 1901. 



Paruschowitz, possibly on account of the danger of caving in ; but in 

 order to fulfil the same purpose as completely as the circumstances 

 permitted, mud was pumped into the bore, and left undisturbed for 

 some time, that it might acquire the permanent temperature of the 

 strata. When observations were commenced, the last 40 metres of mud 

 were found to have become so consolidated that the hollow rod employed 

 for lowering the thermometers could not be forced into it, and the lowest 

 observation that could be obtained was at 1,9.59 metres, about 200 metres 

 deeper than the deepest obtained at Schladebach. The following is the 

 record of the observations : — 



Each temperature recorded in the list is the mean of the indications 

 of six thermometers, which were enclosed together in a steel case, 

 supported inside the hollow rod near its lower end. The case had been 

 tested and found watertight under a pressure of 250 atmospheres. The 

 thermometers M'ere similar to those described in our account of the 

 Schladebach observations— mercury thermometers of the ' overflow ' kind, 

 open at the top, their indications being interpreted by placing them in 

 water which is gradually warmed up till the mercury is on the point of 

 overflowing. 



As the operation of lowering a thermometer to any point in a bore 



