THE MINERAL SPRINGS OF SARATOGA 29 



The last salt found abundant enough to plot on the charts was 

 the bicarbonate of soda, NaHCOg. In the oldest series of analyses 

 it favors very small values, the maximum being 359 parts, the mini- 

 mum, 54.4. In the Chandler series the maximum is 1409, the 

 minimum 64.6. In the Department of Agriculture series we find the 

 exceptional Geyser water with 5058, which may be rejected from 

 serious consideration. Next to it is the Chief, 1367. In two none 

 is reported whatever. 



Following the salts mentioned, potassium chlorid, KCl, is the 

 one which on the whole next merits attention. In the earliest 

 analyses it was seldom calculated. Only one record has been made 

 and that of the Red spring, 116.6 parts in a million (6.86 grains in 

 a gallon) by Professor Appleton. Such little potassium as was 

 reported by the early chemists was usually combined with bromin, 

 but many times we find no mention of it at all. In the Chandler 

 series potassium chlorid is uniformly reported and fails in no 

 analysis. Its maximum is 686.5 parts per million (40.4 grains per 

 gallon) in the Glacier Spouting well. Its minimum 22.1 (or 1.3 

 grains) in the Seltzer spring. Among the thirteen analyses one is 

 between 600 and 700; one between 400 and 500; one between 200 

 and 300; eight between 100 and 200; and two less than 100. Ob- 

 viously, the common experience is between 100 and 200, or between 

 6 and 12 grains per gallon. In the Department of Agriculture 

 series of seventeen analyses potassium chlorid is uniformly re- 

 ported; one, the maximum, exceeds 400 (Carlsbad water 415); 

 five fall between 300 and 400; two between 200 and 300; two 

 between 100 and 200; and seven below 100, the minimum being 

 7.2. A comparison of these two statistics leads to no very tangible 

 conclusion. 



In the earlier analyses the next salt in abundance after sodium 

 bicarbonate is iron bicarbonate, more often reported as iron car- 

 bonate. It appears in thirteen out of sixteen analyses. If we 

 express it uniformly as bicarbonate we find that in six analyses 

 it exceeds 100 parts in a million (maximum 148.2) ; in seven- 

 analyses it is below 100, the minimum being a trace. In the Chand- 

 ler series iron bicarbonate is uniformly reported. Its maximum 

 value is 43.7 parts per million, its minimum is .9. In the Depart- 

 ment of Agriculture series the iron is sometimes given as bicarbonate 

 and sometimes as ferric oxid with alumina. The maximum of the 

 ])icarbonate is 132.9, the minimum, none at all. that is no iron what- 

 ever was found in one case. Where expressed as the oxid with 



