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Blowing soap bubbles
Soap films and bubbles serve very well for observations on surface tension. You can make a good soap bubble solution by placing three level tablespoonfuls of soap powder or soap flakes into four cups of hot water. Let the solution stand for three days previous to using. Try blowing bubbles with a bubble blower, a soda straw, a clay pipe and an old tin horn about 4 cm in diameter.
FIRST AID TREATMENT FOR SHOCK : Some degree of shock is produced in most accidents. Shock is associated with changes in the system of blood circulation varying from temporary
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