ON THE TRANSFORMATION OF MERCURY, ETC. 257 
discovered that bicyanuret of mercury* and the iodhydrargy- 
rate of ioduret of potassium, which, as it is known, possesses 
properties very analagous to those of perchloride of mercury, 
are not affected by the above mentioned preparations, which 
transform sublimate into calomel. We possess mixtures of 
these two substances, with the cook's syrup, made more than 
a year back, in which the cyanurate and the iodhydrargyrate 
have experienced no decomposition. 
The iodhydrargyrate of the ioduret of potassium, discovered 
by the late Polydore Boullay, has been, as we know, frequent- 
ly employed with success, for several years, by Dr. Puch. 
physician to the Hopital du Midi, as a remedy in syphilitic 
diseases. It is usually prepared by combining equal parts of 
ioduret of mercury and ioduret of potassium. 
We entreat those physicians who, for the future, wish to 
combine a vegetable with a mercurial treatment, to consider 
the facts we havehere related. — C hem. from Jour, de Pharm 
ART. LXXIIT— ON AQUA REGIA : ON HYPONITRTC ACID, AS A 
MEANS OF OXIDATION ; ON THE CONSTITUTION OF THE 
SAME ACID, AND THE PART IT ACTS ON BEING PUT IN 
CONTACT WITH ORGANIC SUBSTANCES. 
Br Dr. Kcene, Professor of Chemistry at Brussels. 
(Jontiuued from p. 211. 
On the pari which Hyponitric Acid acts when in contact 
with Organic Substances. 
22. The property of hyponitric acid to convert most 
bodies into oxides of the highest stage of oxidation, is attri- 
* The basic cyarmret of mercury (oxycyanuret ; ) however, deposits 
after a time almost inappreciable traces of metallic mercury, by contact 
with the cook's syrup. 
23* 
