Tuesday night's London Gazette intimates that cattle plague has been detected in a dairy at Hackney Wick, another in Stratford, and third at Westham.  The Gazette also contains notices empowering Local Authorities to make regulations prohibiting and regulating the sale and movement of cattle.  A meeting of agriculturists was held at Oxford on Wednesday, Mr. HALL, M.P., presiding, for the purpose of considering the best means of preventing the spread of cattle plague.  A resolution was passed that it was desirable that foreign stock, whether from scheduled or unscheduled countries, should be instantly slaughtered at the port of debarkation, and that fairs and cattle markets for animals should be prohibited during the present outbreak of plague, except under special licence from the Privy Council.