Technikatörténeti szemle 13. (1982)

CONTENTS STUDIES Ödön ALLIQUANDER Zoltán SZÖKEFALVINAGY Ferenc SZABADVÁRY Pál VAJDA Éva Katalin VÁMOS Gábor OSZETZKY László FEJÉR Lajos BARTHA, Jr. Gyula BATÁRI Gyula KISZELY György FEHÉR János TARDY Deep-drilling technology in Hungary 1848—1918 from the aspect of petroleum and natural gas prospecting 11 The one-time Small Academy 21 Leonardo da Vinci: Efficiency problems of technological inventions 31 The golden age of Hungarian electric industry and the international reception of it 41 The Hungarian electrical industry at the industrial exhibitions of the last century 57 Chapters from the history of river flow measurement 69 The role of Hungarian astronomers in laying the foundations of astrophysics 93 About Jânos Joo's industrial periodical „Hétilapok" (Weekly Papers) 107 Abraham Ganz and the first chilled-casting in Central-Europe 115 The history of agricultural research in Hungary 1869—1938 125 Eastern magyar references of early maps 129