PESTS AND DISEASES, 161 



water. Where only slightly infested, pull off and burn 

 the decayed scales, and well wash the bulbs in a solution 

 of Gishurst Compound, to which some flowers of sulphur 

 has been added. Burn the soil, and throw the pots into 

 hoi water. Repot the bulbs in fresh compost and in clean 

 pots, and never allow the soil to get too dry. Dryness 

 at the root is favourable to the increase and activity of 

 this pest ; moisture is fatal to its progress. 



Dart Moth Caterpillars The larva? of the Heart 

 and Dart Moth (Agrotis exclamationis) and of the Dart 

 Moth (Agriotes segetum) are destructive to many bulbs. 

 They are of a dirty grey colour, furnished with dots and 

 hairs. Both feed beneath the soil. 



REMEDIES. Before planting the bulbs dress the soil with 

 a soil fumigant, digging this substance in deeply. The 

 fumes will diffuse themselves through the soil, and suffo- 

 cate all soil insects, including the above, and wireworms, 

 and Leather Jacket grubs. In the case of established 

 bulbs, apply to the surface and fork in as deeply as possible- 



Slugs and Snails Both do a good deal of harm in 

 gardens, especially to the young shoots of lilies. There 

 are two kinds of harmful snails, the Common Snail (Helix 

 aspera), and the Garden Snail (Helix hortensis). They are 

 easily distinguished from slugs by carrying their shells on 

 their backs. There are several kinds of the latter the 

 Black Slug (Arion ater), Garden Slug (A. hortensis), Yel- 

 low Slug (Limax flavus), Field or Milky Slug (Limax 

 agrestris), and the Large Slug (Limax maximus). 



REMEDIES. As both are increased by eggs deposited in 

 the soil, it naturally follows that if the eggs can be de- 

 stroyed the less will be the number of Slugs and Snails 

 to do damage to crops. Therefore, if a dressing of Ap- 

 terite or Vaporite be given in autumn, winter, or early 

 spring, and this dug deeply into the soil, the eggs will 

 be destroyed . Others remedies are to lay down heaps of 



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