De Sallo obtained classical education and was admitted to the Paris bar in 1652, although he later devoted himself to scholarly aspects of the law rather than active practice, serving also as a counsel in the French government.
He belonged to the clique of Jean-Baptiste Colbert, minister of finance under Louis XIV, and had active contacts with other prominent European scholars.
[1] As a loyal Gallicanist, de Sallo enjoyed considerable trust by the court and received a twenty-year privilege for publishing.
The Journal under his direction was suppressed after the thirteenth number, but was revived shortly afterwards,[2] this time under his assistant Jean Gallois' editorship.
The official reason for this was de Sallo's failure to submit content for approval before publishing, but was probably a result of the pressure of some influential authors whose works were criticized by the journal.