174 THE POTATO. 



should be treated with a dressing of corrosive sublimate, 

 which will effectually kill all germs. Obtain a number of 

 two-ounce packets of corrosive sublimate, finely pulver- 

 ised; take three wooden (riot metal) pails, and put two 

 gallons of hot water into each, and also add one packet 

 (two ounce) of sublimate to each pail. Gently stir the 

 water until the sublimate is dissolved, and leave the solu- 

 tion in the pails until next morning. Then have ready 

 three large flour barrels, which have been soaked until they 

 will hold water; put into each barrel thirteen gallons of 

 cold water, and add to each one of the parts of the sub- 

 limate solution, which will make fifteen gallons in each 

 barrel. Leave this for three or four hours, stirring occa- 



TUBERS INFECTED WITH POTATO SCAB. (See p. 172.) 



sionally so as to get the poison thoroughly mixed with the 

 water; meanwhile, wash the potatoes through two waters 

 in tubs, fill the barrels with these washed potatoes and 

 leave them in for an hour and a-half . Then turn the liquid 

 into some convenient vessel, and roll the potatoes out 

 on to the ground. The barrels may then be again filled 

 with fresh seed and the same water, which latter may be 

 used for three or four times. Of course, any number of 



