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Lyttelton Times, Volume XXIII, Issue 1364, 23 February 1865, Page 2

A letter, which is remarkable both as a documentary curiosity and as a specimen of manufacturd® 8 . as " )een received from America by the Birmingham Journal. It is written on iron rolled so thin that the sheet is only twice the weight of & similar sheet of ordinary note-paper. The letter is dated " South Pittsburg (Pennsylvania), Nov. 6, 1864," and says:—"ln the number of your paper, dated October 1, 1864, there is an article setting forth that John Brown and Co., of the Atlas Sheffield, had succeeded in rolling a plate of iron 13j inches thick. I believe that to be the thickest pl* te ever rolled. 1 send you this specimen of iron at the Sligolronworks, Pittsburg, Pennsylvania, astne thinnest iron ever rolled in the world up to this tiip®» •which iron I challenge all England to surpass tor .strength and tenuity. This, I believe, will be W first iron letter that ever crossed the Atlantic Ocean—Yours, &c., John C. Evans." The iroh is /® 1 " to be of exceedingly fine quality, and the sheet is DJ tar the thinnest ever seen in this country. * letter will be deposited in the museum of the Mi land Institute. Tested by one of Holtzappl gauges, the thickness of the sheet is found to be 1000 th part of an inch. A sheet of Belgian fV! supposed hithertp to be the thinnest yet rolle , the 666 th part of an inch thick, and the thicknes . an or <linary sheet of note paper is about the 4 part of an inch thick.