[ S9 1 3 
XLI. An Account of the Magnetic al Machine contrived by 
the late Dr. Gowin Knight, F. R. S. and prefented to 
The Royal Society, by John Fothergill, M. D. F. R. S. 
TO THE PRESIDENT AND FELLOWS OF 
THE ROYAL SOCIETY.. 
G ENTLEMEN,. 
R. June 2 7jT) Y being left executor to your late worthy 
-L* member gowen knight, m. b. a very ex- 
traordinary magnetic machine of his contrivance, and 
which had coft him much labour and expence, came 
into my pofleffion. This, I thought, might not be un- 
worthy of a place in your repofitory; and I therefore 
defire your acceptance of it, as a monument of. Dr. 
knight’s very fingular abilities, and of my regard to the 
purpofes-of your inftitution. 
I muft, however, inform you, that this machine, which, 
by the annexed figure and its explanation, may be obferved 
to confift of two parts, is by no means fo ftrongly mag- 
netical as it was at the dolor’s deceafe. Not. long after 
this event, it was necefifary to remove this apparatus from > 
his- 
