ever fince the firfl: publication of it, been con«- 

 ftantly employed in making further enquiries 

 and difcoveries in this fcience : He had even 

 actually made fome collections towards it, of 

 which, however, the literary world is likely to 

 be unfortunately deprived, as he lately died in 

 the fortieth year of his age, before he had 

 time to revife and put his new obfervations ii} 

 due order,. 



THE 



