MISCELLANEOUS CEOPS. 139 



larva of one of the Noctuidce, causes considerable damage 

 to the cotton, corn, leguminous, oleraceous, and other crops 

 of the United States. Tt is only found to a very limited 

 extent in the south of England. For further information 

 see Dr. Riley's Fourth Report of Entomological Commis- 

 sion, U.S.A., pp. 355-381, and Insect Life, vol. i. p. 331. 



The Cabbage Plant-Louse {Aphis brassicce) is one 

 of the so-called " green flies," and has a somewhat similar 

 life-history to those already described. These aphides 

 " do much harm by inserting their suckers in the plants 

 and drawing away the juices; and also causing a much 

 deformed and diseased growth." 



Prevention. — A good system of cultivation, and a liberal 

 use of the most suitable manures, is a means of lessening 

 the destructive powers of this insect. 



Cure. — (1) Top-dressings of lime, soofr, and sulphur are 

 recommended as remedies. (2) Drenching the infested 

 plants with a solution, containing one part of ammoniacal 

 or gas-liquor and twelve of water, completely destroys 

 the cabbage aphis. (3) Solutions containing tobacco, 

 soft-soap, and quassia, are said to have a like effect. (4) 

 Manuring the land with a top-dressing of iron sulphate 

 (I cwt. per acre) has a tendency to produce a luxuriant 

 growth, and after this treatment the plants are rarely 

 attacked by this injurious insect. 



The Crane Fly (Tipula oleracea). The grubs, called 

 leather-jackets, of this insect attack the roots, etc., of the 

 varieties of cabbages, as well as those of gramineous and 

 other plants. 



Prevention and Cure. — See chapter iv. 



The Cabbage Gall Weevil {Ceutorhynchus sulci- 

 collis) has already been described under " The Parasites of 

 Turnips." 



