173 The Sweet Potato 



These ingredients should he placed in an iron vessel, 

 and hoiled for fifteen or twenty minutes or until 

 thoroughly dissolved. Forty gallons of water should 

 he added to 1 quart of this stock solution, and 3 pounds 

 of freshly slacked lime. This solution is cheaper than 

 the other arsenicals, and if properly prepared and ap- 

 plied is very satisfactory. 



Tobacco decoction is prepared hy hoiling tobacco 

 stems and other refuse of tobacco, 1 pound to 1 or 2 

 gallons of water. If any of the water evaporates while 

 boiling, enough should be added to replace it. This so- 

 lution is used for plant-lice and other delicate insects. 



Blach-leaf-^O or nicotine sulfate may be purchased 

 from any reliable drug dealer, and it should be pre- 

 pared by adding nicotine sulfate to water at the rate of 

 1 part to 1000. If a sticker is desired, fish-oil soap 

 should be used as directed in other sprays. This spray 

 is for plant-lice and other sucking insects. 



Oold diist or laundry soap. — A good insecticide may 

 be prepared by mixing 4 pounds of gold dust or com- 

 mon laundry soap to 50 gallons of water. When the 

 soap is used, it should be shaved into fine slices and 

 boiled in 1 or 2 gallons of water until thoroughly dis- 

 solved. This stock solution should then be poured into 

 the proper amount of water and stirred or churned 

 until it is dissolved. 



Poison bran mash is prepared as follows: 



1 pound paris green. 

 25 pounds wheat bran. 

 % gallon cheap molasses. 

 % dozen lemons or oranges. 



The paris green and bran should be mixed thoroughly. 



