Proofs and Reputations: Sir James Hall and the Use of Classification Devices in Scientific Argument

The importance of classification and labelling in shaping people's perceptions has long been acknowledged and it is accepted that the imposition of a label can affect how someone is treated. Although the process of labelling has been studied in some areas of society, its role in the scientific community has gone largely unexamined. Labels may well be important though if they are used in the presentation of arguments, particularly over contentious issues. Sir James Hall (1761-1832), commonly known as the originator of experimental geology and as a prominent member of the Edinburgh Huttonians, is strongly associated with two labels. He has traditionally been presented as either an experimentalist who confirmed the ideas of Hutton or as a Huttonian who deviated from his mentor's scientific system to incorporate diluvialism. Close analysis, however, reveals that his geological work was systematic and not a misunderstanding of Huttonianism. Similarly, it is proposed that Hall's reputations arose from labels used by other scientists in responding to his work. Since enduring reputations may be built up in this way, it is important that historians should be cautious in their acceptance and use of scientists' own labels.