EXPERIMENT STATION. 73 



Here follow the results of partial analyses of the samples of salt 

 and a statement of their composition, as calculated from the 

 results of analysis. On dissolving the samples in water, only 

 very minute, scarcely weighable, quantities of foreign matters 

 remained undissolved. They are therefore as clean from dirt and 

 mechanical impurity as could be desired. 



Chemical Analyses of Samples of Salt 

 Sent by D. H. Van Hooseae. 



1 3 3 4 5 



Deakens Asliton Higgins Phoenix Holmes 



Salt. Salt. Salt. Fact 'y-U' led Salt. 

 Finnev & Selleck H. K. & F. B. Holmes & J. C. Rock- 

 Benedict, Bros. Thurber & Co. Keeler. well. 

 Norwalk. Norwalk. New York. Norwalk. Wilton. 



Results of partial Analysis. 



Water at 100" 0.69 0.71 0.48 0.77 0.37 



Lime 0.67 0.65 0.62 0.66 0.55 



Magnesia 0.10 0.09 0.11 0.09 0.07 



Sulphuric Acid 0.92 0.82 0.83 0.85 0.84 



Composition calculated from the above Analytical Results. 



Water at 100' 0.69 0.71 0.48 0.77 0.37 



Sulphate of Lime 1.56 1.40 1.41 1.45 1.33 



Chloride of Calcium 0.06 0.14 0.08 0.12 



Sulphate of Magnesium — 0.09 



Chloride of Magnesium 0.24 0.21 0.26 . 0.21 0.10 



Chloride of Sodium— Salt.. 97.45 97.54 97.77 97.45 98.11 



100.00 100.00 100.00 100.00 100.00 



The composition given is calculated in the manner believed to 

 express most truly the real state of combination of the elements 

 present. Sulphate of lime exists in all the samples to the extent 

 of 1.33 to 1.56 per cent. These quantities are practically the 

 same, for the sulphate of lime is tasteless and, in these amounts, 

 without any sensible effect on the quality of the salt. 



The three compounds chloride of calcium, chloride of magnesium 

 and sulphate of magnesia, may be classed together, as they are 

 highly soluble bo'dies with a bitter taste, and so far as I know, are 

 essentially alike in their influence upon the quality of the salt. 

 Of these we observe that the first four samples contain almost 

 identically the same amounts, 30 to 35 ten-thousandths. In the 

 5th sample they are present in smaller proportion. The latter 

 sample also contains less moisture and from one-third to two- 

 thirds of one per cent, more pure salt than the other samples. 

 6 



