National Geographic : 1950 Apr
Dr. Mann found cow barns hanging on a bush DR. WILLIAM MANN first observed the strange family life of the curious ant, Polyrhachis simplex, when he explored the Kerak region of Palestine in 1914. Small silk-and-leaf structures that the explorer found on bushes near his tent were the tip-off that Polyrhachis was living in the vicinity. Each of these structures sheltered leaf hoppers, which exuded a kind of nectar that the ants fed on. The ants were sheltering the hoppers, as humans keep milk cows, to furnish food for the colony. But it was not until he located the ant nest and followed the trails leading from it that Dr. Mann discovered how the aerial cow barns for the food producing leaf hoppers were built. Worker ants were carrying Polyrhachis's newly hatched larvae to the building site. Then, these infants set to work spinning the silk to make shelters for the family's milk cows. It seemed to Dr. Mann that the ants' babies, as soon as they were born, contributed a great deal toward the upkeep of the whole family-a trait quite rare in the realm of living things. And certainly unheard of among human families. For, as any family man knows so well, the big problem is not to find work for infant hands-but to make sure your youngsters are provided for until they're able to go it alone. And that problem can be made vastly easier for you by your Travelers agent or broker-a man it'll pay you to know. With his expert guidance in helping you set up your life insurance program, you can make sure that your children will have a house to live in, food to eat, decent clothes to wear, and the school ing they need-even though you're no longer on hand to earn for them. See your Travelers man today. MORAL: INSURE IN The Travelers ALL FORMS OF INSURANCE AND SURETY BONDS The Travelers Insurance Company, The Travelers Indemnity Company, The Travelers Fire Insur ance Company, The Charter Oak Fire Insurance Company, Hartford 15, Connecticut. Serving the insurance public in the United States since 1864 and in Canada since 1865.