XVI INTRODUCTION. 



box. Put in this box some larva, say a potato worm ; feed 

 it daily with the leaves on which it was found feeding ; 

 keep the soil moist, and, if no change takes place before 

 cold weather, remove to a cellar and keep till spring. 

 Any good-sized glass jar will serve as a breeding cage, as 

 a candy jar, fruit jar, or battery jar, with a piece of tin 

 laid on as a cover. A jelly glass makes an excellent 

 breeding case for eggs and young larvae. 



