are those that eat into the hardest wood, making holes as true and 

 smooth as you can make with a carpenter's gimlet. I believe you will 

 want that magnifying glass pretty soon to examine those wonderful 

 mouth parts. 



Then some of these bugs can sew, making seams so perfect and 

 drawing torn or cut edges together so carefully that you will need the 

 magnifying glass again to find where they have been at work. Some- 

 times instead of simply mending, they c\it patterns out of leaves with 

 their sciss(ir-like jaws and sew the pieces together to make the de- 

 sired article. There are others that spin, some coarse, rough threads, 

 bnt others the finest silk. Indeed, if I were to try to tell you of 

 all the wonderful things bugs could do I would have to write a book 

 instead of a leaflet. Squirrels and rabbits cannot do such things, nor 

 can birds. So I think if you watch closely you will find in your study 

 of bugs not only many useful things, but many very wonderful things. 



But I believe the most wonderful thing is yet to be told. If you 

 see a young lamb you know it is a lamb, and when it grows it only gets 

 bigger, and though we call it a sheep, it has still the same shape and 

 eats the same kind of food. A young pig is just like an old one, only 

 smaller. But with our bugs this is not so. Most of them have three 

 different forms, in each of which they spend part of their life. These 

 forms look very unlike, they have very different habits and sometimes 

 eat different food. Some time in the summer you may be fortunate 

 enough to find some eggs which have been laid by a butterfly upon a 

 leaf. If you mark the spot and watch carefully by and by you will 

 see the eggs break open, and there will come out, not little butterflies, 

 but ugly, worm-like looking things, with any number of legs and 

 strong, big jaws, mth which they immediately begin to devour the 

 leaf upon which they were born. We call these caterpillars. Scien- 

 tific men call them larvae. You can always tell a caterpillar from a 

 worm, because a worm has no visible legs and no well-developed 

 mouth parts. Xow, remember that every caterpillar you see is only a 

 "bug" in one stage of its life. "VVatch these caterpillars. Find a to- 

 mato •■worm" and watch it from day to day. Does it eat much? 

 Does it gi'ow rapidly? Go to the currant bushes and watch the cater- 

 pillars there. Examine the tent caterpillars that grow in cherry and 

 elm trees. Do they eat much? Do they grow rapidly? I believe you 

 will come to the conclusion that about all a caterpillar has to do is to 

 eat. Indeed, many insects are only destructive in the caterpillar stage. 

 Do you know if the farmers in Indiana knew this and would destroy 

 caterpillars, or better still, the eggs, they would save thousands of dol- 



