The Cabbage-caterpillar 



for him before the apparatus wherein the 

 Microgaster is at work. For an hour and 

 more, standing lens in hand, he, in his turn, 

 looks and sees what I have just seen; he 

 w atches the layers who go from one egg to the 

 other, make their choice, draw their slender 

 lancet and prick what the stream of passers- 

 by, one after the other, have already pricked. 

 Thoughtful and a little uneasy, he puts down 

 his lens at last. Never had he been vouch- 

 safed so clear a glimpse as here, in my finger- 

 wide tube, of the masterly brigandage that 

 runs through all life down to that of the very 

 smallest. 



371 



