. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Other Invertebrate-Animal Study 46s tern light. To form some estimate of the work done in a single night, remove the "casts" from a square yard of earth one day, and examine that piece of earth the next. It is well to have a terrarium in the school- room for frequent observation. Scatter grass or dead leaves on top of the soil, and note what happens. For the study of the individual worm and its movements, each pupil should have a worm with some earth upon his desk. Observati
. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Other Invertebrate-Animal Study 46s tern light. To form some estimate of the work done in a single night, remove the "casts" from a square yard of earth one day, and examine that piece of earth the next. It is well to have a terrarium in the school- room for frequent observation. Scatter grass or dead leaves on top of the soil, and note what happens. For the study of the individual worm and its movements, each pupil should have a worm with some earth upon his desk. Observations—i. How does the earthworm crawl? How does it turn over? Has it legs? Compare its movement with that of a snake, another legless animal. What special provision for locomotion has the earthworm ? 2. Compare the lengths of the contracted and extended body. How accounted for? 3. Describe the body—its shape and color, above and below. Examine the segments. Do all the worms have the same number? Compare the head end with the tail end of the body. Has every worm a "saddle," or clitellum? 4. Does the earthworm hear easily? Has it eyes? Is it sensible to smell or to touch? What sense is most strongly developed? 5. Describe the home of the earthworm. Is it occupied by more than one worm ? How long does it take a worm to make a burrow? How does it protect its home ? How does it make a burrow ? In what kind of soil do you find earthworms at work? 6. Is the earthworm seen most often at night or by day? Where is it the rest of the time? How does it hold to its burrow? When is the tail end at the top ? When the head end ? 7. What is the food of the earthworm? How does it get its food? 8. Look for the eggs of the earthworm about manure piles or under stones. 9. What are the enemies of the earthworm? Is it a friend or an enemy to us? Why? 10. The earthworm is a good agriculturist. Why?. Where the crayfish Please note that these images are extracted from scanned page im
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