Title: Maṭmin u-mevashel be-Shabat
Subtitle: maśa u-matan, ḥidushim u-veʼurim, ḥaḳirot ... : uve-sofo Ḳunṭres "ha-ḥashmal be-Shabat"
Subjects: Electricity, Judaism, Prohibited work (Jewish law), Sabbath (Jewish law), Religious aspects of Electricity