220 Unguentum Hydrargyri. 
has. been employed for twelve years in collecting every. thing 
that the phyficians of different countries have written for ¢ or 
again{t the total extirpation and annihilation of the fmall- 
pox by means of police regulations. He propofes to publith 
a work, in which he will give the refult of his refearches on 
_ this fubjeét, and on the poffibility of the attempt, and will 
pay great attention to ftate with accuracy as many faéts as 
poflible. In the German Journals he invites all thofe who 
have at heart the happinefs of mankind, to point out to him in 
a precife manner, either fuch faéts 2s have come within their 
own knowledge, or paffages in books of travels which con- 
tain an account of meafures that have been taken by the 
order of governments, or only by individuals, among polifhed 
or favage nations, at any period, or in any country, by which 
this terrible contagion has been either removed or entirely 
checked. 
A NEW PROCESS FOR FORMING THE UNGUENTUM 
HYDRARGYRI. 
As the procefs of combining mereury with hog’s lard 
is well known to be tedious, and to require a confiderable 
time, the following method of fhortening it has been an- 
nounced by Gattling in his Ta/chen-Buch fir Scheidkun/ller 
for the year 1798. “This procefs, fays he, can be ipeedily 
performed by the addition of a very fmall quantity of the 
flowers of fulphur. For a mixture of two ounces of hog’s 
Jard and fix drachms of quickfilver, it will be neceffary t6 
employ only fix grains of the flowers of fulphur, and the 
procefs will be cqampleted in a few minutes: 1 do not fee, 
adds M. Gottling, that fo {mall a quantity of the flowers of 
fulphur can hart the effect of the mixture, and’ am of 
opinion that this prefcription may be of eonfiderable ‘ule in 
ov bacig t St] 2B is 
tiigquron? 
On 
