6 4 Dr. Hersci-iel’s Experiments, &c. 
ment with respect to a classification ; but the specific difference 
between planets and asteroids appears now by the addition of 
a third individual of the latter species to be more fully esta- 
blished, and that circumstance, in my opinion, has added more 
to the ornament of our system than the discovery of another 
planet could have done. 
Slough, near Windsor, 
Dec. i, 1804. 
