years of his life has been devoted to the foun- 

 dation of a new Museum, in which he endeavoured 

 to realise the idea of a complete separation between 

 the scientific and the public collections and thus 

 to effectuate „das Ideal eines naturhistorischen 

 Museums". 



His opinion regarding this question he explained 

 in a communication to the International Congress 

 of Zoology at Bern; for he was not only an assi- 

 duous visitor of these international assemblies, but 

 as a President of the Congress at Leyden in 1895, 

 lie was also a member of the Comité Permanent, 

 Returning from the latest congress at Monaco he 

 showed the first traces of an illness, that in a few 

 months has ruined his vigorous constitution. 



