PHYSICAL ano LITERARY. 195 
On September 3. there were a: great deal 
of ftreamers, which ‘rofe nearly'from the 
fame point that the ‘thunder afterwards came 
from; -and gradually worked. north; till they 
defcended below the’ horizon. The ’air had 
a thunder-like | appearance, for feveral days 
before this ftorm ; and for fome nights after 
it, the {treamery vapour appeared equally dif- 
fufed, muddy, inert and languid, “afd not 
vibrating any variety of colours; as if the 
more volatile parts had been confurtied. It 
is highly probable that lightning and the au- 
rora borealis are of the fame materials. In 
hot countries f{treamers are not feen, or but 
rarely; becaufe they are kindled into thun- 
der and flafhes of lightning: in cold coun- 
tries ftreamers abound, and it feldom thun- 
| : ders. The ftreamers have ferved to pre- 
dict thunder to follow next day, in fummer ; 
and they have been alfo feen to break out 
into flafhes of lightning. Thunder difturbs 
the motion of the magnetic needle; and it 
has been lately foundi: Sweden, that ftream- 
a ers do the fame. Thus thunder, electri- 
city, magnetifm, and the aurora borealis, 
_ appear all wonderfully related; and many 
things 
