[ <33 ] 
XVIII. Experiments concerning the dif- 
ferent Efficacy of pointed and blunted 
Rods , in fecuring Buildings againjl the 
Stroke of Lightning. By William 
Henley, F. R . S 
Rfedde, Dec. 1 6, ~| p R Q M an accident which lately 
Ji happened to the chapel in Tot- 
tenham-court road, where a poor man was killed, 
an account of which I had the honour of pre- 
fenting to the Royal Society, the Gentlemen, who 
have the care of that building, were delirous ol 
eredfing a proper conductor, to prevent fuch ac- 
cidents in future; which was done accordingly 
under my direction, except three points at the top, 
to which I rather incline to prefer a fingle one. 
On this occafion, I was willing to obtain the bell 
information I could, upon the queftion, whether 
the preference be due to points or knobs, for the ter- 
mination of conductors \ for which purpofe, 1 made 
the following experiments. . 
EXPERIMENT I. . 
I placed two of Mr. canton’s electrometers, A. 
and B. [Tab. VIII. Fig. ill.] inhabited, upon Rands 
i - of 
