A LINGERING GOOD-BY. 213 



phus deposited that egg. Perhaps she thought 

 that one aphis was enough for her infant's first 

 meal. She did not want him to injure himself by 

 over-eating. Let us be charitable. 



You can see such grubs pick up the Aphides 

 one by one. How must it seem to reach out, 

 catch one's breakfast, hold it up in the air, even 

 if it is as big as one's self, and devour it alive ? 



I have had Syrphus larvas that had a tinge of 

 red in their complexions. When a grub has 

 eaten enough, it sticks itself to a leaf, its body 

 draws up and becomes somewhat hard. After a 

 time this puparium opens and the fly appears. 

 One that I raised had a golden thorax and a gold- 

 and-black abdomen, the legs being yellowish, and 

 the eyes reddish and big. The body was slightly 

 tinged with green underneath. 



Great numbers of these flies must appear in 

 the course of a year. I have found grubs at work 

 in April, and I know not how long before such 

 creatures may have begun to stir. I have found 

 other grubs that came out as flies as late as Octo- 

 ber. We owe much to these diligent blind grubs. 

 If a person can put enough larvaB of the Golden- 

 eyed Fly, Syrphus, and the Lady-bug on trees 

 infested with plant-lice, there need be little fear 

 that the enemy will not be conquered. There are 

 many little servants ready to aid man if he will 

 but become acquainted with them and show them 

 the work he wants them to do. " All flies shall 



