Michael John Gorman is Professor of Life Sciences in Society at Ludwig-Maximilians-University, Munich, Germany and Founding Director of BIOTOPIA Naturkundemuseum Bayern, Germany.

Introduction
1. Establishing Mathematical Authority and the Politics of Christoph Clavius
2. Trusting the Jesuit Mathematicus
3. Grienberger, Mathematics and Modesty in the Collegio Romano
4. The Uses of Correspondence
5. Magnetic Declination and the Problem of Longitude
6. Discipline and Authority
7. Experiment, Expertise and Centralized Authority
8. Theatricality and the Failure of Replication
Appendix: Documenting Public Mathematics in the Collegio Romano
Bibliography
Index