100 



793. PARIS GREEN— Adulterated. 



Is often sold by the trade. Can be detected by use of strong am- 

 monia, which completely dissolves pure Paris green, leaving no sedi- 

 ment. 



794. PARIS PURPLE. 



Used like Paris green. 



OTHER INSECTICIDES. 



795. ACETIC ACID. 



In dilution to about 10 to 15 per cent of the acid. It is applied as a 

 spray. 



796. CARBOLIC ACID. 



A solution of 1 part in 100 of water is used against parasites on do- 

 mestic animals and in their houses. Mixed with soft soap and lime it 

 is applied, in spring, to tree trunks to repel borers. It may also be 

 used in solution or in emulsions, either on the foliage or among roots 

 of plants, but kerosene is preferable. 



797. SALICYLIC ACID. 



Is applied in powder or solution to soft-bodied insects. 



798. SULPHURIC ACID. 



A weak solution is sprayed on soft-bodied insects. 



799. COTTON-SEED OIL. 



Rubbed on domestic animals against parasites. 



800. OIL OF TURPENTINE. 



Applied on the bark of trees and on live-stock suffering from para- 

 sites. Is also emulsified with soapsuds and used as a spray against 

 soft-bodied insects. 



801. FISH OIL. 



Is used pure or with the addition of a little carbolic acid on domestic 

 animals to repel insect pests. (See also fish-oil soap.) 



802. PETROLEUM— Crude. 



803. PETROLEUM— Refined. 



If broken into a very fine mist, may be sprayed sparingly on dor- 

 mant trees and shrubs and on very hardy foliage. The various emul- 

 sions are much preferable for most purposes. 





