3 o o Papers  relative  to  an  Accident 
could  not  be  prevented ; however,  I found  that  the  fen- 
fation caufed,  after  charging  this  wire,  was  nearly  equal 
to  that  which  had  been  experienced  from  the  long  wire 
in  the  forty- fixth.  experiment. 
exp.  xlix.  Upon  joining  the  farther  end  of  thefe 
coils  to  one  end  of  the  long  wire,  fo  that  the  whole 
length  was  in  this  experiment  about  three  thoufand  nine 
hundred  yards,  and  afterwards  charging  the  nearer  end 
of  the  coils,  and  without  the  great  cylinder  (it  being 
at  that  time  taken  down)  the  fenfation  complained  of, 
by  two  indifferent  perfons,  was  twice  as  violent  as  the 
fenfation  perceived  by  the  fame  perfons  when  the  long 
wire  alone  was  charged. 
It  may  be  now  proper  to  make  fome  general  obferva- 
tions  rel'pefting  the  explojion  itfelf,  and  the  quantity  of 
the  fluid  difcharged  in  confequence  thereof. 
After  many  experiments  we  found,  that  when  the 
great  apparatus  was  fully  charged,  and  the  motion  of 
the  wheel  fuddenly  flopped,  it  appeared,  that  a Angle 
exploflon  at  either  end  of  it,  inftantly  (as  to  fenfe')  dif- 
charged the  fluid  contained  therein ; but  never  fo  effec- 
tually as  to  leave  no  remainder : for  the  quantity  which 
did  remain  (upon  a fecond  application  immediately  after- 
wards) was  generally  fufflcient  to  caufe  a fecond  explo- 
lion 
