ST. PATRICK'S DAY IN NEW YORK.--The following "open letter" has been addressed to the Mayor of New York:--"69, Wall Street, New York, March 19th, 1888.--My dear Sir,--While coming from Washington yesterday on the limited express, my eye caught the telegram printed in a Washington paper announcing your order forbidding the display of the Irish flag from the City Hall on St. Patrick's Day. I could not repress an audible and emphatic 'Amen,' quite to the surprise of the ladies and gentlemen in the car. For many years I, in company with thousands of Americans and adopted citizens from England, France, and Germany, have been outraged and scandalized by this annual insult to our intelligence, our pride of country, our religious belief. In the minds of many others besides the writer, that banner represents in a large degree the worst elements in our body politic--ignorance, vice, bigotry, and crime. It is displayed on the 17th of March in nearly every rum shop, gambling hell, and thieves' den in New York. It was borne in the ranks of the murderous mob that held possession of the city in the July riots of '63. But, aside from this, no legal or other right exists for the display of that flag or any other, except the ones you indicate, from the City Hall of the great metropolis of a land whose people are by a large majority consistent Protestants, on a day set apart to honour the memory of a fabulous Roman Catholic saint. Furthermore, this is literally a rum-sellers' and a rum-drinkers' procession. The wholesale rum-seller rides on horseback, the retail rum-seller rides in a carriage, the drinkers walk, until many of them, overcome by rum, fall in the gutter, are gathered up by the police, cared for in the station houses and the penitentiary, cleaned, and clothed, and fed at the expense of the long-suffering taxpayer. I respect the honest, right-living Irishman or woman, Catholic or Protestant, and would not deny them a single right to which I, a native-born American citizen, am entitled; but I enter my indignant protest against the steadily increasing attacks upon our most valued institutions by this largely foreign-born and most turbulent portion of our population. It is high time to call a halt and compel obedience to decency and law. You will certainly receive the heartfelt thanks and unanimous support of every lover of our city, our country, our institutions, our laws.--I am, my dear sir, very respectfully yours, GEORGE SHEPARD PAGE. To his Honour A. S. Hewitt, Mayor of the City of New York." [We say, All due honour to the noble Mayor of New York, for such a common-sense decision.--ED.]