. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 397 2. Measure one of the pits. How broad across, and how deep? Are all the pits of the same size ? Why ? 3. What can you see as you look down into the ant-lion's pit? Roll a tiny pebble in and see what happens ? Watch until an ant comes hurry- ing along and slips into the pit. What happens then? As she struggles to get out how is she knocked back in? What happens to her if she falls to the bottom? 4. Take a trowel and dig out the doodle-bug. What is the shape of its body
. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect Study 397 2. Measure one of the pits. How broad across, and how deep? Are all the pits of the same size ? Why ? 3. What can you see as you look down into the ant-lion's pit? Roll a tiny pebble in and see what happens ? Watch until an ant comes hurry- ing along and slips into the pit. What happens then? As she struggles to get out how is she knocked back in? What happens to her if she falls to the bottom? 4. Take a trowel and dig out the doodle-bug. What is the shape of its body? What part of the insect did you see at the bottom of the pit? Do you know that these great sickle-shaped jaws are hollow tubes for sucking blood? Does the ant-lion eat anything except the blood of its victim ? 5. Can you see that the ant-lion moves backward more easily than forward? How are its hind legs formed to help push it backward? How does this help the ant-lion in holding its prey? How does the big awk- ward body of the ant-lion help to hold it in place at the bottom of the pit when it seizes an ant in its jaws? 6. What shape is the ant-lion's head? How does it use this head in taking its prey? In digging its pit? 7. Take a doodle-bug to the schoolroom, place it in a dish of sand, covered with glass, and watch it build its pit. 8. Read in the entomological books about the cocoon of the ant-lion and what the adult looks like, and then write an ant-lion autobiography. Supplementary reading—Insect Stories, Kellogg, "The True Story of Morrowbie ; THE MOTHER LACE-WING AND THE APHIS-LION Teacher's Story LITTING leisurely through the air on her green gauze wings, the lace-wing seems like a filmy leaf, broken loose and drifting on the breeze. But there is pur- pose in her flight, and through some instinct she is enabled to seek out an aphis-ridden plant or tree, to which she comes as a friend in need. As she alights upon a leaf, she is scarcely discernible be
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