[2] He collaborated in the Répertoire de jurisprudence, the later editions of which appeared under Merlin's superintendence, and contributed to other important legal compilations.
[3] As an elected member of the States-General for the Third Estate in Douai, he was one of the chief of those who applied the principles of liberty and equality embodied in the National Constituent Assembly's Tennis Court Oath of 20 June 1789.
[4] He also prepared the report for the Assembly that argued that no compensation should be paid to the German princes whose lands in Alsace were forfeit when France incorporated them.
[6] Although not always an advocate of violent measures, as a deputy to the National Convention in The Mountain, Merlin de Douai voted for the execution of King Louis XVI.
[6] Merlin de Douai convinced the Committee of Public Safety to agree with the closing of the Jacobin Club on the ground that it was an administrative, rather than a legislative, measure.
Merlin de Douai recommended the readmission of the survivors of the Girondin party to the Convention and drew up a law limiting the right of insurrection.
He was accused of the bankruptcy and various other failures of the government and was forced to retire into private life during the Coup of 30 Prairial VII on 18 June 1799.