Show Airplanes Fight Froat Frost and Pl Plant nt New Forests Foresta In several federal parts of ot the world where delicate fruit truIt crops are grown frost is le a deadly enem enemy It has bus been discovered dis dis- covered that ground frosts are unlikely un un- unlikely likely In cloudy weather since the clouds Io ds act like blankets and prevent Ire the soil from giving up Its heat On clear nights it has long been custom custom- customary at ary to protect orange lemon and other oth- oth er citrus fruit trees by lighting smoke tires fires The beat heat of the fires Is trifling but their smoke cloud pl v de the necessary necessary sary ury counterpanes c Recent experiments experiments expert ments meats that airplanes can b for tucking up fruit trees for forthe forthe the night The plane flies files to and fro over o the orchard emitting a dense cloud of smoke and the trees are kept warm wann Sometimes forest fires tires destroy thousands thousands thousands thou thou- sands upon thousands of acres of ot tim Um- her ber To replant these In the ordinary Way Bray would I be almost Impossible but wonderful results have hare been blen obtained by using airplanes to distribute tree seeds over oyer the out burnt out burnt out lands |