166 Mr. J. A. Phillips on the Composition 



at a temperature of 92° F. ; and a large portion of the upper 

 parts of the vein had been removed by stoping. 



The following results, in gramme per litre and grains per 

 gallon, were obtained by analysis : — 



Water from Dolcoath* 



Solid matter *6710 gramme per litre, or 46*97 grains per gallon. 



Sp. gr. = 1-0007. 



Analytical Results. 





Gramme 



per litre. 



Grains per gallon. 



I. 



II. 



I. 



II. 



Carbonic acid 



•0588 

 •1304 

 •0295 

 •1906 

 trace 

 •0004 

 •0044 

 •0006 

 •0007 

 •1040 

 trace 

 •4192 

 •0275 

 •1442 

 trace 

 •0003 

 •0017 



•0578 

 •1294 

 •0302 

 •1906 

 trace 

 •0004 

 •0044 

 •0006 

 •0007 

 •1028 

 trace 

 •4212 

 •0276 

 •1449 

 trace 

 •0003 

 •0017 



412 



913 



206 



13-34 



trace 



03 



•31 



04 



05 



7-28 



trace 



29-34 



1-92 



1009 



trace 



•02 



•12 



405 



906 



211 



13-34 



trace 



•03 



•31 



•04 



•05 



720 



trace 



29-48 



1-93 



1014 



trace 



•02 



•12 



Sulphuric acid 



Silica 



Chlorine 



Arsenic 



Alumina 



Ferric oxide 



Manganous oxide 



Copper 



Lime 



Magnesia 



Alkaline chlorides 



Potassium 



Sodium 



Lithium 



Ammonia 



Nitric acid 





The foregoing results may be thus tabulated : — 





Gramme per litre. 



Grains per gallon. 



I- 



II. 



I. 



II. 



Calcium carbonate 



0554 

 •0064 

 0010 

 trace 

 1773 

 trace 

 0013 

 •0448 

 •3118 

 0015 

 trace 

 •0543 

 •0171 

 •0027 

 •0009 



■0550 



0064 

 •0010 



trace 

 •1749 



trace 

 •0013 

 •0454 

 •3118 

 •0015 



trace 

 •0545 

 •0183 

 •0027 

 •0009 



3-88 



•45 



•07 



trace 



1241 



trace 



•09 



314 



21-83 



•10 



trace 



380 



1-20 



•19 



06 



3-85 



•45 



07 



trace 



12-24 



trace 



0-9 



3-18 



21-83 



•10 



trace 



381 



1-28 



•19 



•06 



Ferrous carbonate 



Manganous carbonate 



Ferric arsenate 





Aluminium sulphate (3S0 4 Al 2 ) 

 Sodium sulphate 



Sodium chloride 







Potassium silicate (K 2 SiO 3 ).. . . 

 Sodium silicate (Na 2 Si0 3 ) .... 

 Sodium nitrate 



Ammonium chloride 





Total by addition 



•6745 

 •6710 

 0316 



•6737 

 •0308 



4722 



4697 



2-21 



47-15 

 216 



Total found directly 













