APPENDIX. 355 



celebrated Danish naturalist, who was born in 1730, and 

 died in 1784. He had no fortune; but, aided by the 

 advice and counsels of his mother, who was a woman of 

 superior mind, he contrived, by force of perseverance, to 

 complete his studies. He began by giving lessons in 

 music, and he continued to teach various branches of 

 knowledge as fast as he himself acquired them. Having 

 become tutor to a young man of fortune, he took ad- 

 vantage of the leisure afforded him by this position to 

 occupy himself with the natural sciences. His first 

 writings speedily brought him into notice, and he was 

 provided with a high and lucrative ofiice ; but having had 

 the good fortune of marrying a woman who was both 

 wealthy and highly cultivated, he gave up his office, and 

 devoted himself exclusively to science. 



The zoological labours of O. F. Muller were directed 

 principally to the Invertebrata ; and his Vermium Terres- 

 trium et Fluviatilium Historia, his Zoologica Danica, and 

 his works on the Hydrachniae, and on the Infusoria, have 

 placed him among the best and most laborious observers 

 of the eighteenth century. 



END OF THE FIRST VOLUME. 



