YIII. GOLDEN-ROD GALL 



Material. — Golden-rod galls brought by the pupils. They are round 

 or spindle-shaped swellings on golden-rod stalks. Look for them in clumps 

 of golden-rod. 



Observation. — How large is the golden-rod gall ? 

 What is its shaj^e ? Has it leaves on its side ? Has 

 it an opening ? Is there anything in the opening ? 



Split a gall in two lengthwise. How thick is it? 

 How large is the room inside ? Do yon find any 

 signs that an insect has lived there ? Do yon find 

 the insect itself ? Is it a caterpillar, a pnpa, or a 

 full-grown insect ? 



Drawing and Composition. — Describe the golden- 

 rod gall with pictures and with written words. Make 

 a picture and a paragraph about the outside of the 

 gall, and another picture and paragraph about its 

 inside. 



SUPPLEMENTARY WORK 



How a Gall is made. — When the golden-rod was yonng, an 

 insect pricked a hole in its stalk, and there laid an egg- which 

 hatched a grub or caterpillar. Then the stalk grew faster at 

 that point than at any other, and so formed a knob around the 

 grub. The grub ate out the inside of the knob for food, and lived 

 in the room that it made. ^ 



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