ELISHA MITCHELL SCIENTIFIC SOCIETY. 57 



In the last column Nos. i, 4, 6, 8 and 11, only were re- 

 peated and in the first four cases 10.8 c. c. acid were used, as 

 this amount suited better the weight of alumina taken and 

 the size of the flask. These experiments of course do not 

 determined the absolute solubility of alumina in sulphuric 

 acid. The temperature and length of exposure are both fac- 

 tors in the solution. They serve to show soley to what extent 

 it is advisable to dilute the acid in order to bring about the 

 greatest solvent action. The best ratio of dilution seems to 

 be 1:5 or 1:6. 



Chem. Laboratory, U. N. C. 



ANALYSIS OF WATER FROM THE ARTESIAN WELL AT 



DURHA]VI, N. 0. 



As this is the only deep artesian well in this State, it 

 seemed of interest to have an analysis of the mineral matter 

 held in solution by its water. A carefully drawn sample of 

 this water was therefore analized. The .sample was drawn 

 during the summer of 1885, about five gallons being sealed 

 in a new and clean demijohn and sent to this laboratory, under 

 the direction of Mr. J. S. Carr. 



The analysis resulted as follows : 



In one kilogram of the water, 



This well is drilled through the older Mesozoic rocks. Ac- 

 cording to Mr. O. R. Smith, who had charge of the work, 

 the drilling was stopped at 1,650 feet without reaching over- 

 flowing water.. The cutting was mainly through sandstone, 

 and at. different depths brine and traces of oil and gas were 



