SUMMARY. — After his stay in Italy (March 1689-March 1690), Leibniz maintained powerful relationship with academics in that country. Fardella, Guglielmini, and Ramazzini were all in Padua at the same time, and these three individuals formed a bridgehead that Leibniz exploited in order to foster the spread of the infinitesimal calculus in Italy. At this time the mathematics chair at the University of Padua was vacant, and this vacancy gave rise to a multiplicity of intrigues which led to Jakob Hermann's nomination in 1707 to occupy the chair and then to Nikolaus I Bernoulli's nomination in 1716 to fill the chair. In this article I gather together a certain number of documents that come from collections in archives, which I hope will interest specialists in the French language in this vast cultural movement to spread Leibnizianism.