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food. In a few weeks they become full grown and descend 

 just beneath the surface of the ground, where they trans- 

 form to the pupa stage. They remain in the pupa stage 

 about ten days, and then come forth as a perfect insect. 

 These then pair and the female soon deposits her eggs, and 

 another brood follows with the work of destruction. There 

 are about four broods in a season, and unless they are held 

 in check, it is easy to see that they increase in numbers with 

 great rapidity. The adult beetle, only, lives through the 

 winter, secluded under rubbish, leaves, etc., and comes out in 

 the Spring to deposit eggs. 



Remedies. — Fortunately this insect can be readily held in 

 check by sprinkling or dusting the plants with Paris green 

 or London Purple, used either as a powder or in a liquid 

 state. In using these remedies as a powder, the poison can 

 be diluted by mixing with four times its bulk of flour. This 

 can then be applied by means of a dusting machine or pow- 

 der gun, or ii can be sifted on by means of a tin can with a 

 few small holes in the bottom. It is better to dust the plants 

 early ia the morning when the dew is on them. In using 

 the poisons as a liquid, 1 pound of the poison to 50 gallons 

 of water, can be sprayed upon the plants by means of some 

 spraying machiue, or the liquid can be carried in a pail and 

 sprinkled on the plants by means of a brush-broom. It is 

 important that the liquid be frequently stirred, otherwise the 

 poison will settle to the bottom, especially Paris green. For- 

 tunately the larvte as well as the adults are destroyed by 

 these remedies. It is important that the application be made 

 as soon as the insects appear, and should be kept up as often 

 as they appear in damaging numbers. This is especially 

 true with the young potato plants, since they will eat every 

 leaf in a remarkably short time. 



