192 
THE POULTRY BOOK. 
either of these defects amounts to a total disqualification in the exhibition pen, 
and, moreover, they possess the serious disadvantage of being hereditary. Polish, 
unless supplied with a sand-bath, are subject to be infested with vermin, which, 
however, may be readily destroyed by dusting flour of sulphur under the feathers ; 
a common flour-dredger, or pepper-castor, being employed for the purpose. 
