a7 = DDrs’ Garnet's: Arrangement &e. 
Of fix feet in the altitude of my gages, and'they are 19 
feet diftant from each other. 
I fhall be glad to hear from you when convenient, 
and am, " 
Pei Sir, 
Your moft obedient and humble Servant, — 
ALEX. COPLAND. 
To Dr. Garnett, 
Harrogate. 
a ftate of momentary decompofition at a confiderable height 
above the gages, and not difpofedto a precipitation near the 
furface of the éarth, 
Fir, 
