46 A MANUAL OF 



you will at once see the importance of keeping 

 the seed leaves unspotted by their greedy jaws. 

 In order to accomplish this, it is necessary to 

 consider that the maggot, after becoming full- 

 grown, changes into the pupa state, and re- 

 mains in the ground for about two weeks, 

 when it again comes forth to continue its 

 depredations upon the plant, which by this 

 time has grown so large as not to be seriously 

 injured by being slightly eaten. So they con- 

 tinue to infest plants of the cabbage family 

 until fall ; and the last litter for the season 

 remaining dormant in the pupa state over 

 winter, come forth perfect beetles during the 

 first warm days of spring, ready to attack the 

 first tender plants which appear. 



OUR PREVENTIVE will now be readily under- 

 stood by every careful reader. By knowing 

 where these pests are to abound which is 

 wherever there was a quantity of cabbage, tur- 

 nips, radishes, mustard, or any plant which they 

 infest, growing during the preceding summer 

 and fall there in early spring may \ve look for 

 the fleas, and as far from there as possible 

 must we sow our cabbage and kindred seeds. 

 But the insects have wings, and will they not 

 go to our beds as soon as the plants are up ? 



