XXIII. EARTHWORM 



Material. Earthworms in a box of damp soil. During the study 

 period have each pupil place a worm on a piece of moist blotting paper. 

 At the end of the lesson turn all the worms loose on mellow soil. 



Observation. How many inches long is the worm 

 that you are studying? What is its shape? What 

 is its color ? How many joints has it ? How is its 

 head end different from its tail end ? Does its back 

 look different from its under side ? Where is its 

 mouth ? Has it eyes ? 



Look for a vein on its back and another on its under 

 side. Count the number of beats that the veins make 

 in a minute. How many does your own pulse make ? 



How does a worm travel ? Touch its head and see 

 if it will travel backward. 



Drawing and Composition. Draw a picture of an 

 earthworm, and then write a paragraph about the body 

 of the worm, another paragraph about its pulse, and 

 a third paragraph telling how it travels. 



SUPPLEMENTARY WORK 



Wormholes. An earthworm lives in the earth, in a smooth 

 tunnel which it makes by swallowing the soil and casting it 

 out again. 



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