National Geographic : 1934 Nov
IB01ILiIN HOT IT SEEMS like black magic to some, but-a pan of clear liquid will boil merrily if placed on a cake of ice. Of course, the liquid must be of ex tremely low boiling point, like liquid air, at minus 318° Fahrenheit. The ice is so much warmer than the liquid air that it actually causes it to boil. Apparent paradoxes of heat and cold are common. In Winter, if a mo torist uses an anti-freeze with a boil ing point lower than water, sooner or later itboils off. Then, his car "freezes" .. that is to say: Tiny particles of ice in the radiator-core clog the circula tion and cause over-heating around the engine-head. Thus in coldest weather his car boils... boils away the anti-freeze, and badly damages the car with heat. Magic? No- carelessness! A sure guarantee against such a dilemma is Eveready Prestone-the all-Winter concentrated anti-freeze. It is undiluted, guaranteed one-shot protection, down to 600 below zero, if desired. Prevents "freeze-up," rust, and corrosion. It will not boil off, and is absolutely odorless. Full protection so inexpensive! Read the full guarantee and protection chart in this issue's two-page Eveready Prestone advertisement. Here you will see how inexpensively your car can have Eveready Prestone protection all Winter long. A NEW IDEA IN A TIE HOLDER Craig Wood, famous golfing star, wearing Krements Free-Action Tie Holder with Collar Holder to match. Side view. Tie slips through upper loop -clip below attaches to shirt. Your tie goes through the loop and moves up and down with the natu ral movement of the body.The front of the holder extends across your tie -a smartly decorative loop or bar of gold. Single Tie Holder, $2.50 to $4.00. Combined with soft Collar Holder in gift box, $3.50 to $5.00. Krementz Quality Jewelry is sold by better dealers everywhere. KREMENTZ FREE-ACTION TIE H OLDERS "Mention the Geographic-It identifies you."