INJURIOUS INSECTS OF 1903. 107 



For trees in foliage use : 



Copper Sulphate, i pound; 

 Water, 250 gallons. 



^ For oat or wheat smut : 



Soak the seed 10 to 12 hours in a solution of i 

 pound of Copper Sulphate to 25 gallons of water. 

 Then put the seed for 5 or 10 minutes into lime water, 

 made by slacking i pound lime and diluting to 10 gal- 

 lons with water. The lime tends to prevent the Cop- 

 per Sulphate from injuring the seed. (Oregon Bui. 

 75. 1903-) 



ig. Corrosive Sublimate — 



Corrosive Sublimate is deadly poison to all animal life, 

 and therefore care must be taken to prevent animals from 

 eating the materials treated. It is used against potato 

 scab and grain smuts. (See also Formalin.) 



For use dissolve 2 ounces of corrosive sublimate in 2 

 gallons of hot water; then dilute to 15 gallons; allow to 

 stand 5 to 6 hours, agitating several times meanwhile, 

 (Always employ wooden or earthen vessels ; never metal- 

 lic.) 



For Potato Scab — Place the scabby potatoes in a sack 

 and immerse in this solution for i to 2 hours. Plant the 

 seed before it becomes contaminated with stray spores of 

 the scab that may be found on dirty floors of the barn, etc. 



For Smuts — The seed may either be soaked, as for 

 potato seed, or may be sprayed thoroughly with the solu- 

 tion. In either case the seed must not be kept wet long- 

 enough to heat. 



For Bedbugs — 



A mixture of Corrosive Sublimate, i ounce. 



Alcohol, 3/4-pint, 



Turpentine, ^-pint, 

 sprayed in all cracks and crevices where bugs might lodge, 

 will effectually rid a house of the pests. More than one 

 or even two doses will probably be necessary. 



