Insect Study 



2>^3 



J a creature 

 orld. 



; compound, 



e made up 



y of larvae, 



n cell. The 



3 an instance 



Jls made by 



ds are open 



above the 



;af; thehttle 



1 witch-hazel 



f these. In fact, each gall has 

 ular history, which proves a 

 ig story if we seek to read it 

 eyes. 



.ESSON LXXIX 

 HE Gall-dwellers 



mght — ^The galls are protective Mossy rose-gall. 



>T the little insects which dwell Comstock's Manual, 



Each kind of insect makes its 



gall on a certain species of plant, and no one understands 



is done or why it is so. 



^sk the pupils to bring in as many of these galls as possible, 

 ae have open doors and some are entirely closed. Cut open 

 e what sorts of insects are found within it. Place each 



kind of gall in a 

 tumbler or jar 

 covered with cheese- 

 cloth and place 

 where they may be 

 under observation 

 for perhaps several 

 months; note what 

 sort of winged insect 

 comes from each. 



Observations — i . 

 On what plant or 

 tree did this gall 

 grow? Were there 

 many like it? Did 

 they grow upon the 

 root, stem, leaf, 

 flower, or fruit? If 

 on the leaf, did they 



Porcupine gall on Section cf same Female gall- ? . +L u^ A ^ 



leaf of white oak. showing cells . fly /ayiwg •"-'^^ ^'^ '-"^ '-'^''•'^^• 



Phc,to by C. J. Triggerson. eggs in oak 2. \Yhat is the 



bud. shape of the little 



