At the meeting of the Canford Estate Agricultural Show on the 22d of October, the lady of Sir John Guest made a brief but most admirable speech, expressing her regard for the laboring classes of England, and her earnest desire that the utmost efforts should be made for their elevation and improvement. This unusual incident, and the admirable spirit which it evinced, elicited great applause. The Town Council of Manchester are taking vigorous steps to compel the manufacturers of that city to consume the smoke of their furnaces, and thus to rid the city of the dense cloud which has hung over it hitherto. The process is found to be perfectly practicable, and decidedly economical. Some of the heaviest manufacturing establishments in the city testify to a saving of _one-third_ in coal. The issue of the experiment will be important. The rapid increase of burglaries and thefts in Birmingham has elicited from Mr. D.H. Hill a suggestion for the suppression of crime, which is regarded as pertinent and important by the leading journals. He proposes that whenever a jury is satisfied that an accused party is addicted to theft, he shall be compelled to prove a good character, and to show means of subsistence, on penalty of being adjudged a thief, and punished accordingly, under an old statute. Emigration from Ireland to the United States continues and increases. A great part of those who leave are described by the Irish papers as being farmers of the most respectable class, and considerable apprehensions are expressed of the injurious effect of the movement on the prosperity of the country. A letter from BRAZIL, written by Lieut. BAILEY of the royal navy, details some rather prompt proceedings on his part in the capture of slavers. He was sent out to the Brazil station, and arrived off Rio Janeiro June 18th, and in sight of the harbor captured a vessel engaged in slave-trading, and sank her the same night. On the 20th, he captured a second, and sent her to St. Helena for adjudication; and on the 23d, he seized another, taking her out of a Brazilian port, which has hitherto been contrary to law. The affair excited a good deal of feeling in Brazil, and was likely to lead to a misunderstanding with the English government. The effect of such proceedings, in exasperating a government which might be induced by friendly appeals to put an end to slave-trading, is forcibly urged.