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XXXV. Letter from the Hon. Daines Bar- 
rington, F. R. S, to William Heberden, 
M, D. F. R. S, giving an Account of fome 
Experiments made in North W ales, to af 
ce7‘tam the different Quantities of Rain^ 
which fell m the fame Thne^ at different 
Heights. 
S I R, 
December 24, 1770. 
Rcrul June 6, /\ S I happened to be at the meeting 
177 •• /~\ of the Royal Society, when your 
experiments were read, relative to the different 
quantities of rain, which fell within receivers of the 
fame dimenfions at different heights from the ground ; 
it occurred to me, that the fame trials might be 
made at more difproportionate heights, though at the 
fame diflance from the furface of the earth. 
I accordingly directed two rain-gages of exactly 
the fame dimenfions to be made by your inftrument- 
maker, which you was fo obliging as to take the 
trouble of examining. 
As I propofed to keep them at the top and bottom 
of a Welch mountain, and am not ftationary a fuf- 
ficient time in the Principality to attend to a long 
courfe of fuch obfervations j 1 fent the rain -gages to 
Mr. 
