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2 been still further extended, in order to enable me to arrive at
3 results which might have been more prolific of benefit to suffering
4 humanity. For instance, I began, during the decrease of the
5 cholera, namely, during the last three weeks, to try the effect of
6 galvano-electric rings as a preventative. I caused a few hun-
7 dreds to be made, some of copper and zinc, and others of silver
8 and zinc, which I distributed gratis, and observed, that whilst
9 some of those who wore the rings of copper and zinc fell victims
10 to the disease, those who wore the silver and zinc rings were all
11 saved. It is true, that some of the latter became infected with
12 the disease, but the attacks were of so slight a nature that, in my
13 opinion, they would have recovered without any medical assist-
14 ance. But I must repeat, that this was only at the time when
15 the disease was already on the decline; and since that period, I
16 have had no other opportunity of making further observations
17 in that country ; consequently, I cannot assert that this pre-
18 ventative is infallible. However, to ascertain still further the
19 value of these rings for the purpose indicated, I ordered some
20 hundreds of them to be made during my stay at Vienna, in the
21 autumn of 1850, at the period when that Asiatic guest took up
22 its residence in that capital. I presented them gratuitously to
23 many persons, and I have not heard of a single fatal attack
24 attending the wearers. Many medical men and others expressed
25 their opinions upon the subject, and thought the idea a ridiculous
26 one ; but the future will show whether I am mistaken or other-
27 wise. Some of the wearers of these rings at Lahore stated that
28 they diffused warmth in the finger on which they were worn,
29 in fact I observed a sort of rash to break out on the part
30 on which they wore the rings, and they were obliged to dis-
31 continue wearing them for a few days, or place them on the
32 other hand. One ring is quite sufficient for one person, although
33 the wearing of several would do no harm. Bracelets, buckles,
34 and chains produce still greater effects, and I am of opinion
35 that such rings, &c. are not only useful during the cholera,
36 but are beneficial in many other respects. I have myself enjoyed
37 the best of health during the last six years, which I attribute