]42 ON TW0 CELESTIAL B0DIE9. 



to be new ; before Dr. Young's laft letter informed me of the 

 circumftance. Every attempt to account for this lingular effect 

 of confonances by pulfes tranfmitted to the ear through the 

 air, will in all probability encounter the obftacle already men- 

 tioned : for the notion of force comprifes the idea of direction, 

 bs well as that of power ; and if the latter property cannot be 

 ufed independent of the former, every theory founded on this 

 principle muft be contradicted by obfervation. I do not pre- 

 tend to form a judgment on the work of M. Lagrange, from 

 Dr. Young's extracts; and perfons refiding at a diftance from 

 the metropolis, as I do, feldom enjoy accefs to uncommon 

 books, fuch as the Mifcellanea Taurinenfia. However, I 

 agree to the proportion of M. Lagrange, that a particle of 

 air agitated by two founds, acquires a motion differing from 

 that, which each of them would give to it feparately : at the 

 fame time I muft withhold my affent to the fequel, if I under- 

 ftand it rightly ; viz. that the founds coalefce in confequence 

 of this motion, until my arguments on this fubjeft have been 

 refuted. While this remains unattempted, the prolongation of 

 the prefent controverfy promifes to be of no advantage to fci- 

 ence : I will therefore in future difregard all remarks and ob- 

 jections which do not attack the fundamental principle of my 

 theory. 



JOHN GOUGH. 

 Middkjhaw near Kendal, Feb. 11, 1803. 



Ill 



Observations on the two lately difcotered celejlial Bodies. By 

 William Herschel, LL. D. F. R. S. 



(Concluded from Page 128 J 



Wi 



ITH regard to the fifth, concerning fatellites, it may 

 not be eafy to prove a negative ; though even that, as far as 

 it can be done, has been fliewn. But the retention of a fatel- 

 lite in its orbit, it is well known, requires a proper mafs of 

 matter in the central body, which it is evident thefe ftars do 

 not contain. 



The fixth article feems to exclude thefe ftars from the con- 

 dition of planets. The fmall comas which they ftiew, give 



them 



