3^4 Proceedings relative to the Accident 
^ultimately terminated in contact with the bricks at the bottom 
of it (at z, fig. 5. and 7.). This conductor, therefore, in its 
paffage downward, did not communicate, till it reached the 
bottom of the drain, with any thing better able to carry off 
electricity than mafonry or timber ; for the iron-ftaples fattening 
it to the wall, and the lead lining the valley, were themfelves 
in contact with fuch fubftances only. 
As tins drain, then, is the real termination of the conductor, 
it mutt now be more attentively confidered. It begins at the 
wettein fink of the fore-court U (fig. 1.) ; thence it is conti- 
nued (V, \ , tig. 1.) with a proper declivity to the eattern link W 
(^5* 5* then runs under the eatt flank of the houfe 
(V r 2, fig. 1. and 5.), and ends beyond it in the fide of the cefs- 
pool P (fig. 1.). From the grating on the fink U to that on the 
link W (fig. 1.) is 89 feet, and thence to the cefs poolP near 
69 feet.; the breadth of the drain at bottom (z, fig. 7.) i s i 4 
inches ; its height to the fpring of the arch (fig. 7.) 16 inches, 
and to the crown of the arch (*, fig. 5. and 7 ) 23 inches. When 
we faw it, the moitt filth, or fludge, at bottom (z, fig. 7.) was 
two or thiee inches deep ; but when the court is overflowed, as 
the two grates (at U and W, fig. 1.) are laid on purpole to re- 
ceive the fuperfluous moifture, there mutt be fome run of 
water through it. We ettimated the fall of the drain, from 
tne eattern link W ^fig. I .) to its termination in the cefs-pool 
P, at two feet. The cefs-pool itfelf refembles a well, walled 
round in the infide, and has foul water ttagnating at the bot- 
tom, which cannot rife above a certain height on account of a 
large main, leading from it into the great relervoir (at R, 
lig. 1.), out of which the foul water is ultimately pumped. 
When we examined this cefs-pool, the water in it ttood even 
with the bottom of that great drain, confequently was almoft 
as 
