The Ericsson not at the Crystal Palace

1853 Scientific American  
of Macon , Q.e . ��ia , has invented a very ingenious and ori�al im provement for regulating the speed of steam engines , by cutting off the steam in the steam box when it exceeds the established velocity.
doi:10.1038/scientificamerican08201853-388g fatcat:gx4cqxd2afhhfgkn4hst3frvce