j&tttxfte THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS. VOL.UME 5.] NEW YORK MARCH 23, 1850. [NUMBER 27. length onjhe cam, may be made to affect the IMPROVED MACHINERY FOR ROLLING IRREGULAR Scientific American, surface of any given length. FORMS OF METAL.—… … cars, in one of which he was a passenger.— copperas is dissolved with warm water. The This improvement in machinery is the in- the cam, at those points required, to roll the His foot was crushed and he was made a crip- logwood must be boiled for three hours in a vention of Mr. John S. Hall, of…
