13 



and completely destroyed by changing the crop. Many other insects 

 can be held in check by this means. While the individual farmer 

 may do much to hold injurious insects in cheek, much more may be 

 accomplished if all the farmers will co-operate in fighting these pests 

 of the farm. 



By hunting up the hiding places of these troublesome little fellows 

 and 1)Y iKiting where they lay their eggs, when these eggs hatch and 

 how the young insects feed you will not only become greatly interested 

 Ijut you will also learn better how to destroy the injurioufs insects 

 without harming the heneficial ones. 



I have not named all the conditions of successful crop production, 

 but I am sure enough liavc been said to convince you that, in order 

 to be must highly successful, the farmer must be a very close observer, 

 an earnest student and a careful exjDerimenter. 



If, as pujiils, you act on the suggestions of these leaflets on Xature 

 S(udy, you will acquire habits of close, accurate observation and study 

 that will ])rove very helpful to you later in life, whether you engage 

 in farming or in some other business. 



Those of 3-ou who live in the country possess many advantages for 

 Nature Study. The fields on every side invite you to watch Nature's 

 jjrocesses and jiry into her half-hidden secrets. B}' making the most 

 of your (i|i])ortunities for Nature Study you will not only find health- 

 ful and delightful recreation but gain added preparation for leading 

 happy and useful lives. 



