134 



Report .S.A.A. Advan'cement of Science. 



hole, which would fill to that level, but the quantity could be exhausted 

 by pumping a very few minutes. 



The analyses recorded are those taken of the water first obtained 

 from the bore-hole after pumping for some hours, generally sixty, and 

 there is little doubt but that with subsequent pumping the (juality 

 of the water has not improved, but appears harder than when first 

 tapped. The proof of this is in the condition of locomotive boilers, 

 and the complaints of persons using the water. Only a few analyses 

 of the water have, ho^ve^"er, been made after the expiry of several 

 months' intermittent pumping from a bore-hole. An analysis of the 

 Aberdeen Road bore-hole water, made thirty-one months after the one 

 shown in the tabulated statement, showed : — 



( 



Total solids at 105 C 

 Chlorine ... 

 Is^itrogen as nitrates 

 Nitrogen as nitrites 



Domestic. 



Ixcrease. 



In grains ppv gallon. La grains per gallon. 



... 19300 125-6 



... 67-10 51-0 

 Trace 



Considerable Considerable 



In parts per million. In parts per million. 



Ammonia — free... ... ... 1-066 1-048 



Ammonia — albuminoid... ... -184 -1838 



Oxygen absorbed in 15 minutes 1-7616 1-7616 



Oxygen absorbed in 4 hours ... 2-1764 2-1114 



(Not suitable for domestic use.) 



Total solids at 180 C 175-2 



Silica 2-04 



Oxide of iron and alumina ... -30 



Lime 40-08 



Magnesia 18-59 



Alkalies calculated as Na., O ... 23-80 



Chlorine .' ... 67-10 



Sulphuric oxide ... ... ... 25*37 



Locomotive. 

 In graitis p>^'>' gallon. In grains per gallon. 



110-0 



-78 

 •14 

 28-62 

 13-56 

 10-64 

 51-0 

 19-53 



Hardness — temporary 

 Hardness — permanent 



In jmrfs per 100000. In parts per 100-000. 



... 43-2 8-5 



... 72-51 62-79 



and special arrangements had to be made to supply employes with 

 suitable potable water. 



