A collection of invaluable “Kelalei HaGemara,” or principles of Talmudic methodology. These essays were penned by R. Emanuel Sephardi and by the distinguished Egyptian halachist R. David ibn Zimra. Specialized studies on the hermeneutic principle of “Kal Vechomer” (a fortiori) were drawn from the writings of R. Samuel Al-Valensi and R. ibn Musa. In his introduction, the printer bemoans his inability to provide page numbers for Talmudic citations, due to the scarcity of copies of the Talmud in Italy following its confiscation and destruction by the Church.