Year

Comment

1851

Born in Berlin (Charlottenburg).

1854

Dr. phil. Louis Weyl dies (Theodor Weyl's father).

1854–1871

Delicate child, very protected by his mother. Goes to a public school (Humanistisches Gymnasium, Berlin) very late and develops many interests that he would pursue for the rest of his life e.g. botany, music, and the works of classical authors. Poor student and passes his school-leaving examination at the age of 20.

1872–1878

Studied chemistry and medicine at the University of Heidelberg, Wilhelms-Gymnasium Berlin under E. du Bois–Reymond, and the University of Strasbourg under Hoppe–Seyler. Lived a very boisterous student life, enjoyed teasing and mocking others but remained good-natured and loyal to close friends! Received his doctorate degree in 1877 from the University of Strasbourg and qualified as a medical doctor in 1878 also at the University of Strasbourg. Military service in the winter of 1874 and March–September 1878.

1879–1883

Moved back in 1879 to Berlin and worked at the University Laboratory on physiological chemistry under E. Baumann's supervision. In the same year he went to lecture on physiological chemistry at the University of Erlangen under I. Rosenthal's supervision. He married his cousin, Elise from Weinberg. In the winter of 1880 – 1881 in conjunction with the Berlin Science Academy and through his connection with E. du Bois–Reymond he spent time at the Zoological Station Dohrns, Naples working on the Torpedo project. He was very much influenced by the way of life in Naples.

1883

Moved back to Berlin to the Hygiene Institute at the TH Berlin-Charlottenburg where he concentrated on pure chemistry in a laboratory of his own.

1888

Over time he became more and more interested in the subject of hygiene and eventually took up a post at Robert Koch's Institute, Berlin.

1890–1905

Published a series of articles on questions regarding bacteriologist and hygiene issues. He became secretary of Berlin's Society for Public Healthcare and an international expert on the subject of hygiene. He travelled extensively because of this to England, Hungary, Russia and Turkey. He became the Sultan of Turkey's personal advisor regarding the sanitation of Constantinople and received the honor of the Turkish Order for his work.

1895

Lectured at the TH Berlin-Charlottenburg on the subject of hygiene and established his own medical practice.

1909–1911

Produced the Methoden der organischen Chemie series among many other chemistry works. In 1911 he was awarded the title of professor.

1913

Died in Berlin, Germany.