Mr, Arxins’s Meteorological Fournal, 8c. 59 
‘THE inftruments are kept at a houfe about thirty feet above 
high water in the Briftol Channel. ‘The barometer is made after 
-pe Luc’s methed; and to obferve the moft minute alteration I 
have divided it into the one-fixteenth of a line, or 192 partsin an 
inch. The thermometer is a mercurial one, eraduated according 
to FAHRENHEIT'S {cale, as being the moft univerlal, though, I 
think, a partial one, and placed in the open air in a northern 
afpect. An hygrometer I have likewife kept in the open air ; 
but being an inftrument that does not admit of, as I ever heard 
of, a certain bafis, whereon to fix the fundamental point be- 
tween. the greateft moifture and yvreateft drought, and there- 
fore of little ufe to diftant obfervers, I have omitted thefe ob- 
fervations. For the eafe of correfpondent obfervers, I have 
drawn two columns of the barometer; the firft divided inte 
192d parts of an inch; the fecond into rooth parts. The 
figures in the column of winds denote its ftrength from 9 to 
go degrees of a quadrant. And the moft prevailing winds are 
from north to weft, being generally in thofe dire@ions two- 
thirds of the year, occafioned, as 1 imagine, by the indraughe 
of the Briftol Channel. The barometer this year has taken a 
greater range than ever I found thefe feveral years, being 2.44 
inches. ‘The thermometer hkewife from 21° to 81°; and the 
three rainy months of Odtober, November, and December, 
there fell very little more rain than fell in the month of Au- 
guft alone, which is very uncommon in this part of the king- 
dom. On the ninth of February an odd phenomenon appeared 
to me about ro miles from hence, on my journey to Tiverton. 
I obferved an halo, exactly fimilar to that of the fun, the cen- 
ter of the arch about 15° high, and both ends terminated in a 
field of fuow; but as rainbows are feen only with the fun behind 
one’s back, this, on the contrary, was between me and the fun. 
I 2 January 
