PREFACE 



spread of the human race over earth's fair surface. 

 Our most formidable and ruthless opponents are the 

 insects. It is now almost an even fight for supremacy, 

 and unless we combine and utilise our forces more 

 effectively and efficiently, we shall find it very difficult 

 to secure a livelihood. A few more wars, with the 

 inevitable disorganising of the forces employed against 

 the insect hosts, will result in these enemies getting a 

 strangle hold upon us. Our race may recover, but 

 many millions will perish of starvation and insect-borne 

 diseases. The fecundity of the insect is tremendous, 

 and a little weakening in our offensive will bring 

 disaster, sure and certain, upon our race. The 

 insects are fighting for possession of the earth. It 

 is now a case of Insect versus Man. All other forms 

 of life have been subdued, but the insect still holds 

 its ground, and ever and anon gains considerable 

 advantages over us. The present production of food 

 is not sufficient for the needs of our race. Millions 

 live in a condition of semi-starvation ; hosts actually 

 die of hunger. With the increase of the world's 

 population, we must have a corresponding increase in 

 food production. By subduing the insects and keeping 

 them in subjection we can provide food in plenty for 

 every human being. At present a large percentage 

 of the world's food supply is devoured by hungry 

 insects. 



In our struggle for food and life we have two 

 great aids. Birds stand in the front rank as our 

 allies, and cannibal insects come second in usefulness. 

 We cannot stem the assaults of our enemies with 



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