1 8 0 C H R O N O L O G Y , 1 8 9 9 – 1 9 0 0
Mar 11 Classes at the ETH end. Winter semester ends on 18 March.
Einstein spends the intersession with his family in Milan.
Apr 10 The summer semester at the ETH begins and classes start.
Jul 29 Classes at the ETH end. Summer semester ends on 3 Aug.
Aug 1–Sep 11 Spends the summer holidays with his mother, sister, and
aunt in Mettmenstetten, climbs the Säntis with Maja, and
visits Aarau.
Sep 11 Travels to Milan with his mother and sister.
Oct 9 Winter semester at the ETH begins. Classes start on 17
October.
Oct 16 Accompanies his sister to Aarau, where she enters the
Teachers’ College for Women as a second-year pupil, and
then proceeds to Zurich.
Oct 19 Applies for Swiss citizenship.
Nov 9 Registers at Unionstr. 4 in Zurich, where he again rooms in
the house of Henriette Hägi.
Dec 23 Winter vacation begins.
1900
Jan 6 Classes at the ETH resume.
Mar 17 Classes at the ETH end. Winter semester ends on 24 March.
Apr 17 Summer semester at the ETH begins and classes start.
Jul 27 Passes the oral final examination for the Diplom.
Jul 27–ca. Aug 9 Spends a holiday with his mother, sister, and aunt in
Melchtal. He informs his mother that Maric; and he plan to
marry.
Jul 28 Receives his Diplom as Fachlehrer in mathematischer Rich-
tung (teacher specialized in mathematics) from the ETH.
ca. Aug 9 Goes to Zurich to inquire about a position as Assistent to
Professor Adolf Hurwitz at the ETH.
Aug 18 Travels to Milan.
early Sep Einstein and his father visit the father’s power stations in
Canneto and Isola della Scala, and also visit Venice.
Sep 21 Goes on a trip to Lago Maggiore.
Oct 7 Returns to Zurich, where he works on a doctoral dissertation
during the winter semester.