CHAPTER II. 



INJURIOUS INSECTS, WITH REMEDIES AND 

 PREVENTIVES. 



Insects are of two kinds as respects their manner of 

 taking food, — the mandibulate insects, or those which 

 chew or bite their food, as larvae (" worms ") and most 

 beetles ; and those which suck their food, as the plant- 

 lice and true bugs. The former class is despatched by 

 poisons, the latter by caustic applications, as kerosene 

 or soap preparations. 



Angleworm or Earthworm. —The common angleworm often 

 destroys greenhouse plants by its burrowing. It is some- 

 times annoying in gardens also. 



Bemedy. —Lime-water applied to the soil. 

 Ants. — See Laavns. 



Aphides, Plant-Lice or Green-Fly, and Bark-Lice.— Minute 

 insects of various kinds, feeding upon the tender parts of 

 many plants, both in doors and out. 



Bemedies. — Kerosene emulsion. Kerosene-and-water 

 emulsion. Hot water (about 125°). Coal-tar fumes. 

 Pyrethrum. Fish-oil soap. Tobacco-water. Alcoholic 

 and water extracts of pyrethrum. Hughes' fir-tree oil. 

 In the greenhouse, fumigation with tobacco. Knock them 

 off with the hose. In window gardens, dry pyrethrum or 

 snuff. 

 Apple. AppLE-BDCCcLATRix(J5MCCi<Zafnxi)o?n(/'oZ«'e/Za, Clem- 

 ens).— A minute yellow or green larva feeding upon the 

 upper surface of the leaves, causing the lower surface to 

 c 17 



