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 eves ? 



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

 side. Cormt 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 tliKd paragraph telling how it travels. 



SUPPLEMENTARY WORK 



Wonnholes. — An earthworm lives in the earth, in a smooth j' 

 tunnel which it makes by swallowing the soil and casting it i^ 



out again. 



102 



