MINERALS OF CHILE. 85 



No. 2. From the baths of Colina. The temperature of the 

 water at the source is 89J° Fahr. ; specific gravity 1.00053. 

 The amount of solid contents in one litre are 0.428 gramme, 

 composed of 



GRAM. 



Sulphate of lime 120 



Sulphate of soda 089 



Chloride of calcium 077 



Chloride of sodium 142 



Oxide of iron trace. 



Organic matter , trace. 



Silica trace. 



No. 3. This is also from the baths of Colina, and when 

 collected was 79° Fahr.; sp. grav. 1.00045. The composition 

 of the water is the same as the last. Solid contents in one 

 litre 0.435 gramme, composed of 



Sulphate of lime. 118 



Sulphate of soda 094 



Chloride of calcium 087 



Chloride of sodium 136 



Oxide of iron trace. 



Organic matter trace. 



Silica trace. 



No. 4. From Cauquenes Tibia bath; sp. grav. 1.00270; solid 

 contents in one litre 3.3032 grammes, composed of 



Sulphate of lime 0600 



Sulphate of soda 0320 



Chloride of calcium 2.1682 



Chloride of sodium 1.0310 



Chloride of magnesium trace. 



Oxide of iron 0020 



Organic matter trace. 



Silica 0100 



No. 5. Cauquenes Pelambre bath; sp. grav. 1.00283. It is 

 constituted the same as the last. Solid contents in one litre 

 3.3923 grammes, composed of 



Sulphate of lime 0630 



Sulphate of soda 0410 



Chloride of calcium 2.1751 



Chloride of sodium 1.1012 



Chloride of magnesium trace. 



Oxide of iron trace. 



Organic matter trace. 



Silica 0120 



