FraSkidenstrædeTilHCØrstedInstitutet

res in physics and chemistry in Latin using textbooks printed in Danish. The year 1804 saw the appearance o f the first Danish anti- phlogistic textbook of chemistry and apothecary fragments of which are reproduced in facsimile. 3 The Physics Collection and the Chemical Laboratory in hired pre- mises in the Thott Residence from 1813 to 1819. From 1813 to 1819 the Physics Collection o f the University and the Chemical Laboratory was housed in premises hired for the pur­ pose near “Kongens Nytorv” in the Thott Residence which is shown in pictures and on maps. 4 From 1819 to 1823 the Physics- and Chemistry Laboratory was situated in a hired flat in Nørregade. From 1819 to 1823 the University hired a flat on a second floor in Nørregade in which Oersted fitted up a physics- and chemistry laboratory. Its lay-out and position are depicted. This house was demolished in 1907. Only scant material as to the appearance and lay-out of the house has been preserved, it has been produced in this book. Oersted’s discovery of electromagnetism in 1820 took place on the second floor of the house situated at 35 Nørregade. The Danish edition of Oersted’s research report from the periodical “Hesperus” is reproduced in facsimile. This was a more extensive edition than the one of July 20, 1820 in Latin, French, Italian, German, and English (Annales de chimie et de physique. Tome X IV , pag. 417, Paris; Giornale di fisica ... Decade II, tomi III, pag. 335, Pavia; Annalen der Physik ... Bd. 6 pag. 295, Leipzig: Annals o f Philo- sophy. Vol. XV I, pag. 273, London). The six trusted men whom Oersted wanted to control his work, and whom he mentions in his report on the discovery of electro- 228 5 On worldhistorical ground in Nørregade.