English title page: A critical essay on the Palestinian Targum to the Pentateuch

R. Chaim b. Israel Heller (1879-1960), Talmudic scholar of note. R. Heller was born in Bialystock and raised in Lithuanian yeshivot. While still in Eastern Europe he was a Rav in Lomza. In 1914 he published his epic work Sefer HaMitzvoth L'HaRambam - Mahadurat HaGaon Rabbi Chaim Heller.  In 1917 he moved to Berlin and five years later opened a yeshiva where most of the students also attended the University if Berlin. He left Berlin for New York in 1929. He moved to Israel and Chicago before ending up in New York for good. In New York he was appointed Professor of Talmud at Reits where he served until his passing. In his hesped for Reb Chaim Heller,  R. Chaim Soloveitchik said that when Rav Heller spoke of the Taz, the Beit Yosef, and other sages, it was as if they stood before you in the room, alive.

Among his published work are The Septuagint references in Mandelkern's concordance (New York 1944); leHikrei Halakhot, 2 vol., (Berlin 1924-32); haNusah haShomroni shel haTorah (Berlin 1924); and many papers and articles in period rabbinic journals.