178 A Paper to obviate fome Doubts , &c. 
It remains now only for me to make the moft fincere 
acknowledgement for the favours you have fhewn to me, 
and to fay that I (hall ever remain, with equal refpedt and 
gratitude, 
sir, your moft obedient, &c. 
P. S. Dr. watson junior has done me the favour feparately 
to examine and meafure the powers of my telefcope ; and 
placing the greateft confidence in his accuracy, I rely on his 
meafures at lead: as much as my own. 
