National Geographic : 1951 Aug
S) National Geographic Society 221 Kodachrome by Willard R. Culver Dr. James Needham Tends Dragonfly Pets in His Aquatic Nursery, Set in a Ditch Although the adult dragonfly is a denizen of the air, it spends the first part of its life in water. When full grown, the nymph climbs from the water; its skin splits, and wings unfold. Then the fledgling takes to the air, darting in and out, skimming over ponds, hawking for pesky mosquitoes, gnats, and flies. Here the author inspects a partitioned pen in which he raises nymphs to the winged stage. Wire screening separates the nymphs, which have been collected elsewhere, and lets the water, full of prey, flow through.