MALPIGHI, SWAMMERDAM, LEEUWENIWEK. 571 



portrait by Rembrandt. Although its authenticity has been questioned, 

 it is the only portrait* known of Swammerdam. 



He was born in 1637, nine years after Malpighi. His father, an 

 apothecary of Amsterdam, had a taste for collecting, which was shared 



I'll.. 1. JAN SWAMMkKI'AM. 



by many of his fellow-townsmen. "The vast commerce and extended 

 colonial empire of the Holland of that day fostered the formation of 

 private museums." The elder Swammerdam had the finest and most 



I am indebted to Professor Dr. Hoffman, of Leyden, for this copy. 



