When the annotto is all dissolved, add five pounds of sal soda and five gallons of soft water.
Large crystals of sal soda containing but 37% sodium carbonate are formed.
Dissolve the chloride in half the water cold, and the sal soda in the other half boiling.
Gas burners must be taken off and boiled in a solution of sal soda once in a while.
Sulphate of lime in water, causing ...