520 Appendix. 



PREPARATION. 



Infuse the fresh powder in hot water for three or four hours, and then 

 strain oft' and add to the full amount of water. 



USES. 



For all biting insects as a spray, and for all insects as a powder or 

 fumigant. 



TIME OP APPLICATION. 

 According to the appearance of the pest. 



ACAKICIDES. 



LIVER OF SULPHUR. 

 (Potassium Sulphide.) 



FORMULA. 



Potassium Sulphide. . . . . 3 to 5 ox. 

 Water 10 galls. 



PREPARATION. 

 Dissolve the substance in water. 



USES. 



This is not only fungicidal, but is also an acaricide, and may be used 

 011 gooseberries for red spider. It may be mixed with paraffin. Its 

 action is somewhat uncertain as an acaricide, however, and its place is 

 being taken by paraffin jelly. 



LIVER OF SULPHUR AND PARAFFIN. 



FORMULA. 

 Iron Sulphate . . . . 2 ox. 



Quicklime ...... 1 ox. 



Paraffin . . . . . . 16 ox. (liquid). 



Potassium Sulphide . . . . 4 to 6 ox. 



Water up to . . . . .10 galls. 



PREPARATION. 



Dissolve the iron sulphate in 6 to 7 pints of water, and add to this 

 the quicklime, made into a milk, passing it through a fine sieve to strain 

 off any grit, and then emulsify the above with 16 liquid ounces of 

 paraffin ; then dissolve the potassium sulphide in 9 gallons of water and 

 pour the emulsion into it and well mix. 



