FARMER'S ASSISTANT. .399 



a counter-opening is impracticable, or hazardous ; or where 

 the integuments of the muscles are constantly driping or 

 melting down ; these injections should be used. For this 

 purpose, take of Roman vitriol half an ounce, dissolve it in 

 a pint of water, decant it into another bottle, and add a pint 

 of camphorated spirit of wine, the same quantity of the best 

 vinegar, and two ounces of Egyptiacum. This mixture is 

 also good for ulcerated greasy heels, which it will cleanse 

 and dry. 



These cavities sometimes become lined within with a cal- 

 lous substance ; and in such case they should be laid open, 

 and the hard substance cut away. Where this cannot be 

 done, scarify them, and apply the precipitate, rubing them 

 now and then with caustic, butter of antimony, or equal 

 parts of quicksilver and aquafortis. 



When the bone under the ulcer has become carious, 

 which may be ascertained by probing it, it should be laid 

 bare, in order that the roten part may be removed. In this 

 case, all the loose fl, t>h should be removed, the bone scrap- 

 ed smooth to the sound part, and then dressed with dry 

 lint, or with pledgits diped in the tincture of myrrh, or 

 euphorbium. 



Where the cure does not properly succeed, mercurial 

 physic should be given, at proper intervals ; and, to correct 

 the blood and juices, the antimoniai and aherative powders, 

 with a decoction of guaiacum and limewater, are good. 



URINE. Sec MANURES. 



V. 



VEGETABLE OYSTER. See SALSAFY. 



VENTILATING OF GRAIN. M. Dukamel applied 

 the ventilator to grain, in granaries, with excelent effect in 

 introducing pure air, and expeling the impure, in order to 

 prevent the heating of the grain. 



Mr. Deane recommends a common hand-bellows, for the 

 purpose of carrying the air from it through a tube to the 

 bottom of the grain, in different parts, and blowing in the 

 pure air, which will of course expel the foul. Perhaps a 

 better plan would be, to have a sufficient number of tubes, 

 with small holes in them at proper distances, laid at the bot- 

 toms of bins for holding grain, with one end of each tube 



