FREDERICUS ANNA JENTINK. 



Born August 20tii, 1844. 

 Died November 4th, 1913. 



By his decease the Leyden Museum of Natural 

 History has lost a Director, who during nearly 

 thirty years has given all his energy to this Insti- 

 tution, has tried to extend and to complete its col- 

 lections and to bring its internal arrangement more 

 in agreement with modern views. In the first years 

 of his employment at the Museum (Conservator, 

 1875 — 84) he had the good fortune to study under 

 the guidance of Hermann Schlegel and to be intro- 

 duced by him in the System of the Mammals; for 

 to this class he applied nearly all his scientific 

 labour and he has published a great number of 

 papers on them. Especially by his publications 

 on the Bats and the Rodentia he became known 

 as a learned and accurate scientific investigator. 

 However a good deal of his time in the latest 



