| Show ice making at hono home ho no take a cylindrical earthen carthea vessel and add pour aj 3 ounces of commercial sulphuric acid aul aud 11 ounces of into it and then add 1 ounce of powdered sulphate of odain the center of this mixture a 1 smaller vessel containing 0 the water to lie be frozen then cover the vessel and if possible revolve the whole with a gentle motion in a few minutes the water in the small vessel will be converted into ice the same mixture can be used a second or third time for making a block of ice the operation should if possible be performed in a cool place in a collar cellar for example la science en T |
