Effect of Lightning on a Bullock . 499 
remember perfectly well, that all the cattle that I have 
feen, which were killed by lightning, were either black, 
brown, or red, without any white at all in them. I muft 
obferve to you, that this bullock is both marked and 
affeCted by the ftroke exactly alike on both tides. 
I am, &c. 
HAVING been favoured with thefe letters, by gen- 
tlemen of the ftriCteft veracity, and likewife particularly 
curious in their enquiries, I have not the lead: reafon to 
entertain a doubt of the faCls they communicate ; and as 
they may, perhaps, be productive of fome important dif- 
coveries, refpeCting the different colours of bodies as 
conductors of electricity, I imagined, that it would not be 
improper to lay them before the members of the Royal 
Society. 
To the preceding paper I would beg leave to add the 
following queries : 
I ft, Are not the dark-coloured hairs ftronger in their 
texture than the white or light-coloured ones<w? 
adly, If the dark-coloured hairs are the itrongelt, may 
not this be owing to their being more deeply rooted, and 
partaking more largely of that nutritive matter which 
produces and fupports hair? And does not the change of 
dark-coloured hair to grey, in perfons advanced in years, 
feem to favour this fuppotition ? 
(a ) This is a fa£t fo well known to houfe-painters, that they do not admit 
a dark hair into their brufhes, as they would occahon a difagreeable roughncfs 
in their work. j. Coventry. 
Vol. LXVI. Uuu 3 d ly> 
U u u 
