After the patriotic noise comes the _Oberon_ overture, led by CARL ROSA so daintily that it is the best performance of the evening. By and by everybody attempts to leave in advance of everybody else, with a view to a seat in the cars; and the first night of the Centennial is over. And nine-tenths of the people remark that it is "bully." And several of the remainder speak patronizingly of it. And the critics go up to the "Press Room" for another glass of--in short, for a sandwich: And the Boston young lady expresses her firm conviction, that GILMORE should have managed the whole affair, without the interference of those uncultivated New-Yorkers. And the fat lady from the Fifth Avenue remarks that "nothing has occurred to mar the misanthropy of the occasion." And a wretch who does not consider Miss KELLOGG the "Nightingale of America," smiles a fiendish smile as he thinks that her pretty little voice is to be heard by the conductor and the nearest chorus singers on the following day. And the undersigned goes home to calm his mind by an hour's perusal of Dr. WATTS, and then to dream of star-spangled GILMORES and electric PAREPA batteries until morning. MATADOR. * * * * * [Illustration: GETTING--A FOOTHOLD IN CANADA.] JOTTINGS FROM WASHINGTON. WASHINGTON CITY, June 4, 1870. DEAR PUNCHINELLO: I have noticed with pleasure your bold and generous championship of Philadelphia. I have witnessed, with genuine delight, your expose of the designs of the Iron Legislature upon that most unhappy of rectangular cities; and I have been emboldened thereby to hazard a petition to you to fly still higher in your philanthropic endeavors to do and dare still more for the oppressed of your race--to--to--in short, to attempt the defence of Washington and the Washingtonians!! There! it is out! But that I know you of old; but that, knowing you, I regretted with a great regret your former withdrawal from affairs of State; but that I welcomed your return to the arena of which, in former years, you were the acknowledged victor; but that I knew your unlimited compassion, I would not, though a bold man, have dared to ask so much. Yet, I have reason for my request. For, if Philadelphia be rectangular, Washington has greater claims, seeing that she is scalene, crooked, trapezoidal, and, in general terms, catacornered. If Philadelphia be legislature-ridden, Washington is Congress-burdened. It Philadelphia suffers under an infliction of horse-railroads and white wooden shutters, Washington groans under the pangs and pains of unmitigated CHRONICLE!