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VEGETABLE GARDENING. 



They hatch in about a week into sluggish larvae which feed upon 

 the leaves, never leaving a plant until all the leaves are gone. 

 They also feed to some extent upon tomato and egg plants. When 

 fully developed the larvae descend to the ground where they 

 pupate and emerge as perfect beetles. There are three broods 

 each season. The beeUes winter over in potato lields. 



Remedies. — The number of these pests varies greatly from 

 year to year. The chief remedies are arsenical poisons applied 

 to the foilage. For this purpose Paris green and London purple 

 are commonly used. The method of applying them varies much. 

 It is a common practice to use one pound of Paris green tc 150 

 gallons of water. This must be constantly agitated while in use 

 or the poison wiil settle to the bottom of the vessel. London 

 purple may also be applied in water, but as it varies- somewhat 

 in composition and is liable to contain a dangerous amount 

 of free acid, it is safest to use with it an equal amount of milk 

 of lime. It is also a good plan to use milk of lime with Paris 

 green. Some experiments show that about one pound of lime, 

 one pound London purple and about seventy gallons of water, is 

 a safe and satisfactory formula to use for this crop. When thus 

 applied the work may be done with a spraying machine, a water- 

 ing pot or brush broom, but the spray pump is the most eco- 

 nomical. On a large scale, some kind of a spraying apparatus 

 is necessary. 



These poisons may also be safely applied when mixed with 

 one hundred times their bulk of flour, sifted ashes or road dust 

 or mixed with one hundred pounds of land plaster. When thus 

 used they are easily applied by means of a coarse linen bag. 

 There are a number of proprietary insecticides for the potato 

 beetle but they generally depend for their success on the arsenic 

 they contain. But no matter what insecticide is applied, in order 

 to do the most good it should be used as soon as the young larvae 

 can be seen on the leaves. 



The Imported and Native Cabbage Worm (Pieris sp.). — 

 The imported cabbage worm resembles our native species and 

 both of them are very destructive to cabbage, turnip, cauliflower 

 and similar vegetables and to such flowering plants as mignon- 

 ette, stocks and nasturtiums. They feed on the leaves and 

 will often destroy the cabbage crop unless preventive measures 



