202 Commercial Gardening 



speaking terms with his friends, and in many cases would not recognize 

 them as such even if he were to see them. It would be worth while to 

 make a special effort to cultivate colonies of Ladybirds, Ichneumon Flies, 

 Lace wing Flies, and Hawkflies especially, as these by sheer force of numbers 

 would readily suppress the various destructive aphides and caterpillars. 

 When one comes to realize the wonders of the insect world, and how some 

 kinds prey upon others, one is forcibly reminded of the truth of the 

 couplet, that 



" Large fleas have little fleas upon their backs to bite 'em, 

 Little fleas have lesser fleas and so ad infinitum ". 



