Sir, - As a daily reader of both The Irish Times and the Guardian, I was very interested in the latter's copying of your corrections and clarifications column. As one who studies both columns carefully I find it patriotically gratifying that the English paper continues to have three or four times as many corrections to own up to as you do in D'Olier Street.This must be a great source of gratification to you - and all the more so since you never have any spelling mistakes to correct. - Yours, etc.,Des Fitzgerald,Deansbridge,Armagh.