The portrait of Sir ROBERT PEEL, painted by Lawrence some years ago, is said to be the only one by which the statesman wished his person to be handed down to posterity. The judgment of a person of his exquisite taste, as well as the reputation of the painter, stamps this as the only truly historical portrait. An engraving from this picture, which is pronounced to do full justice to the painter, has been executed, and can not fail of a wide circulation. Copies will soon, without doubt, be brought to this country. The question of copyright in England, to authors not subjects, is not yet decided. Mr. Ollendorf, author of the "New Method" of learning languages, who though not a British subject, resides a part of the time in England, authorized a publishing house to issue an edition of one of his works. Another publisher imported an edition of this work, published at Frankfort, without the author's consent, and sold it at half the price of the former. Mr. Ollendorf and his publishers applied for an injunction to restrain the sale of the pirated edition, and to compel an account of the money already received. This was granted provisionally, the court deciding that the decision which has been supposed to deny the privilege of copyright to foreigners, did not apply to cases where the author was a resident in England, and had assigned his rights to British subjects. A copying telegraph has been invented by Mr. F.C. BAKEWELL. The message to be transmitted is written with varnish upon a strip of tin-foil, which is rolled around a cylinder which is made to revolve by clockwork. A point of steel presses upon this cylinder, which is so arranged as to form part of the electric circuit, which is of course interrupted when the point is in contact with the non-conducting varnish-letters. Upon the receiving cylinder at the other end of the line, is placed a slip of paper, saturated with muriatic acid and prussiate of potash; upon this paper a steel point presses, connected with the conducting wire, the electric current passing along which changes the color of the paper to blue; but when the current is broken by the varnish-letters at the other end, the color is not affected. Both cylinders are then made to revolve at precisely the same rate, in such a manner that the points of steel describe a series of lines upon their surface. These lines become blue on the paper, except at the point where the current is broken, so that the letters appear white on a ground composed of blue lines. By varying the relative size of the cylinders, the copy may be made either larger or smaller than the original. By this telegraph, therefore, communications in cipher may be dispatched. The chief difficulty thus far experienced, is in producing a perfectly corresponding rate of revolution of the two cylinders; but this is certainly not insurmountable.