by Lightning at Heckingham. 
lead, anfwering to the obtufie angle formed between the hip and 
the roof (/, fig. 4.). We obtained leave to bring away both, 
the pieces of lead, and now prefent them for your infpection. 
I he workmen who examined the timber underneath reported, 
that it was not damaged ; nor were any other figns of the 
lightning perceived in the whole length of this ftrip of lead 
from the top to the bottom of the hip. In the pieces of lead 
which exhibit the melted ipots on one furface, the other lur- 
face is perfectly clear of all marks, though the latter was, in 
the uppermoft plate of lead, that which had lain expofed to 
the clouds. Neither of them is melted to any depth into the 
fubftance of the metal. 
As both extremities of the hip, therefore, were, in fame 
degree at leaft, affected by the lightning, we proceeded to afeer- 
tain their diftances from the neareft conductor, which was that- 
affixed to the chimney E (fig. 2. and 4.). Having determined 
the neceftary meafures, and calculated the hvpotenufe, the dis- 
tance from the point of the conductor to the beginning of the 
lead on the top of the hip (e, fig. 4.) came out 42 feet and a 
quarter; thence to the bend where we found the marks of fu- 
fion (from e to f fig. 4.) was five or fix inches more ; and as the 
hip meafured about 27 feet in length, the diftance from the 
conductor to the bottom of the hip (3-, fig. 4.) may be called 
feet. From the top or bottom of the hip, to the neareft part 
of the conductor as it ran downward, the diffances were not a 
foot lefs than thefie meafures. We then took down the upner- 
mofl rod of the condudfor, and carefully examined it, efpecially 
at the point, and at the hook and lcrews by which it had been 
joined to the fecond rod ; but could no where difeover the leaf! 
mark of fufion or other injury. At the bottom of this con- 
dudfor, however, where, having joined that from the chimney 
D, 
