Analyses of Salt. 271 
solar made salt, amounting in that kind to 4.44 grs. The amount 
of water lost in this process is comparatively large, owing, as is 
supposed, to its having been made recently. In the fine varieties, 
the loss was only about 1.20 grains, these kinds having been 
steam dried for the purpose of grinding. 
No. 1. Solar evaporated salt: 
Chloride of sodium, (pure salt,) - 92-980 
Insoluble matter, (carbonate of lime,) 0-010 
Sulphate of lime, (gypsum,) 1-315 
" of magnesia, 0-035 
Sulphuric acid, 0-669 
95-009 
The sulphuric acid, in this case, being more than sufficient to 
saturate the lime and magnesia, it was probably in combination 
with soda. The comparatively large loss may probably be at- 
tributed to water, especially as the salt was dried in less than 212°, 
while each result was ignited. 
No. 2. Bag of 20 lbs., branded W. H. Porter: 
Chloride of sodium, - - 97*466 
Insoluble matter, 0-010 
Sulphate of lime, 1-799 
Lime, 0-058 
Magnesia, 0-082 
99-415 
No. 3. Bag of 20 lbs., J. P. Haskins: 
Chloride of sodium, - 95-819 
Insoluble matter, 0-020 
Sulphate of lime, 1-753 
Lime, 0-043 
Magnesia, 0-074 
Water, M90 
98-889 
No. 4. Bag of 20 lbs., H. Greenman & Co.: 
Chloride of sodium, — 95-113 
Sulphate of lime, 0-957 
Lime, 0.402 
Magnesia, 0-100 
Water, •-- 1-500 
98092 
No. 5. Box Steam refined, from Hope Factory, R. W. Nolton 
&Co. 
