In De magnete, Gilbert frequently appealed to diagrams. As result of a focus on the experimental methodology of the treatise, its diagrammatic dimension has been overlooked in the scholarship. This paper argues that, in De magnete, at least some diagrams are epistemically relevant; specifically, Gilbert moves from experiments to concepts and theories through diagrams. To show this, I analyze the role that the “Diagram of motions in magnetick orbes” plays in the formulation of Gilbert's rule of alignment of magnetic bodies (...) within the orb of virtue. If it turns out that diagrams play a genuine role in Gilbert's magnetic investigations, then his investigative strategy goes beyond mere experimentalism. (shrink)

The article analyzes the conception of a trading zone as a space of action and belief coordination. P. Galison proposed the conception based on anthropological and linguistic analogies. The article reviews the anthropological analogies aimed at building up the conception and the legitimacy of their use. The conclusion is that the analogies used are not accurate enough. If the tribes interacting in trading zones have a common history, material culture, and practices, they can hardly have significant differences. If they are (...) not in possession of all these characteristics, they are unlikely to remind us of different groups of scientists who participate in common researches. The article also contains the hypothesis that acceptance of a common habitus is a condition subject to which the scientists can arrange the mutual understanding space. It issues new challenges to the scientific community, as all people related to university education also accept the scientists’ habitus. (shrink)