Commemoration is a theme to which historians are paying increasing attention, especially to its manifestations in the twentieth century and in relation to war. The formal remembrance of science is an important historical phenomenon, which demands approaches that take account of its distinctive and highly complex relationships with public life. Over the last four hundred years, peer groups and specialized institutions have sought to celebrate selected achievements and to bring those achievements to wider audiences. This address discusses some of the devices and ideas by means of which innovations were turned into cultural items that could be disseminated. Such items included portraits and monuments. As its main examples, the address uses Edward Jenner and vaccination, and the marking of anniversaries.