660 EXPERIMENTAL INVESTIGATION OF THE 
George the Third that are so powerfully magnetic 
as those of subsequent coinage. 
49. With respect to silver ornaments, silver 
medallions, and silver articles for domestic pur- 
poses, they differ materially in their magnetic 
characters. But, generally, they are more highly 
magnetic than the British silver coins. (30.) 
50. The large silver medal of the Society of 
Arts, for the year 1825, weighs nearly two and 
a half ounces; yet it does not display even the 
slightest degree of magnetic action, by the most 
severe test to which 1 have subjected it; whilst 
a small silver medallion of the Commonwealth, 
representing Lord Essex on one side, and the 
two houses of parliament on the other, was found 
to be more highly magnetic than any of the pre- 
viously named coins. A small silver medallion 
of Charles the Second, exhibited a slight degree 
of magnetic action.* An Indian rupee that I 
examined, showed no magnetic action whatever. 
51. The present gold coinage of this country 
is, in general, but feebly magnetic. I have met 
* For the use of these medallions, and the Indian coin, I 
am indebted to my friend G. Wareing Ormerod, Esq. 
