-
His own account
was introduced to Haeckel by Haeckel's son at the celebration of Haeckel's sixtieth birthday in Jena
Jena
GA 28, chapter 15 (the volume; the document itself is not served)
derived from the age he gives for Haeckel: Haeckel was born 16 February 1834, so the sixtieth birthday fell in February 1894
In his own words (APC1928)
Then his sixtieth birthday came.
Da kam sein sechzigster Geburtstag heran. Ich wurde veranlaßt, an der glänzenden Festlichkeit teilzunehmen, die damals in Jena veranstaltet wurde.
- Scholarly · Selg received the first visit of Elisabeth Förster-Nietzsche at the Goethe and Schiller Archive, in the spring of 1894 Weimar Peter Selg, Rudolf Steiner, Life and Work, vol. 1, SteinerBooks 2014, part 01-in-weimar-1890-1897
1894
No day of this year has a dated record; the 2 records below are dated to the year or the month. Residence by the witnesses: Weimar (His own account).
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January 1894
No record dated to a day of this month.
February 1894
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March 1894
No record dated to a day of this month.
April 1894
No record dated to a day of this month.
May 1894
No record dated to a day of this month.
June 1894
No record dated to a day of this month.
July 1894
No record dated to a day of this month.
August 1894
No record dated to a day of this month.
September 1894
No record dated to a day of this month.
October 1894
No record dated to a day of this month.
November 1894
No record dated to a day of this month.
December 1894
No record dated to a day of this month.