 . 
86 TRANS. OF THE ACAD. OF SCIENCE. 
Determination of total weight of solid constituents. — © 
500 grms. of the water, to which had been added 1.981 grms. 
pure Carbonate of Soda, were evaporated in a platinum capsule of 
to dryness, and htated to the 150° C., gave for total weight of 
mo constituents 4.3955; in which was found .0012 gramme of 
Si 
Taking the mean of thei determinations, we deduced that the 
water of the Artesian Well contains 
In 1000 parts. In 1 Ib. Avoirdupois. ie 
. Carbonate of Protoxide of Iron,  .0094 .0658 grain. 
Carbonate of Lime, .1898 1.3286 
Carbonate of oo .0182 .1274° 
Chloride of Calciu 4964 3.4748 
Chloride of Sates .6846 4.7922 
Sulphate of Lime, £8156 §.7092 
Chloride of Potassium, .1608 1.1256 
sales of Sodium, 6.2752 43.8264 
ca 
Sulphuretted Hydrogen 
Free Carboni 4 cid, 
Total, 721 61 051592 gra 
aeermiton of solid constit., 8.7910 61.5370 
terminations o F gaseous constituents than the Car- 
Doni Aud and Supbureted Hydrogen were made, for the want 
accurate eud 
Norz.—The elevation of the ang at whi a By i enced, above ‘the 
_ level of the was about 420 instead be was Comte “commence 
Mento rebar. ao stated at the oe 
