from  Lightning  at  Purfleet. 
3 1 IT 
Meafurements , &c.  of  the  great  Apparatus  and  Machinery. 
Feet.  In. 
Length  of  the  wire  fufpended,  which  ] 
conlilted  of  many  pieces  that  were[ 
connected  by  twilling  the  feveralf 
ends  together,  - - J 
Weight  of  the  wire, 
Twenty-one  pieces  of  this  wire,  laid' 
parallel  and  clofe  to  each  other, 
meafured  exactly, 
Surface  of  the  whole  wire  in  fquare  feet, 
Length  of  coiled  wire,  which  was  fuf- 
pended alfo,  but  in  a form  fo  me  what 
refembling  a ferew  and  of  the  fame 
thicknefs  with  the  wire  above, 
Length  of  great  cylinder,  including \ 
the  brafs  drums  above,  - J 
Diameter  of  this  cylinder, 
Weight  of  tin- foil,  which  covered! 
1 12  drums,  - - J 
Surface  of  1 1 2 drums  in  fquare  feet! 
(including  the  iix  ends)  meafured,  J 
4800 
1 
57 
6900 
iSS 
4 
592 
lbs*. 
