During the 19th century there was no clear boundary line between those who were considered to be part of the scientific community and those who were seen as outsiders. It was during this century that the categories of "professional scientist", "amateur" and "popularizer of science" were being debated and constructed. As a result, in recent times scholars of the period have explored the important roles of neglected amateurs, women and members of the working class. Scholars in the field are continually broadening their definition of the terms "science" and "scientist". This dictionary contains...