Chemocal Nomenclature of Berzelius. 253 
of two electro-negative bodies, which have an atomic constitution 
corresponding to that of an oxide of the least electro-negative ele- 
ment ; for example, we should say phosphoric chloruret,(a) carbonic 
iMoruret: 
Tn the chemical nomenclature used in France, the different de- 
grees of oxidation are denoted by the Greek particles, proto, deuto, 
trito, prefixed to the name derived from the electro- -negative ele- 
ment. The highest degree is frequently expressed by the Latin 
particle per. 
Ihave thought it better to depart from this method, because the 
resulting names are not manageable in the nomenclature of the more 
complex combinations. I therefore use the terms, ferrous oxide, 
and ferric oxide for protovide of iron, and deutoxide of iron. We shall 
see in the sequel the advantages which result from this nomencla- 
ture when applied to the salts in their different degrees of neutrali- 
zation. Iridium and osmium have more than two oxides which 
form salis; I prefix to the regular name of the oxide the particle 
sus,(7) and say susiridious owide, susiridic owide, as will be seen in 
the enumeration of the oxides. 
Certain metals have oxides which contain so He oxygen as to 
be unable to combine with other oxidized bodi 
ides.(8) Other. cae oxides on the contrary, are too highly oxi- 
dized to combine with other oxidized bodies. I call these superox- 
ides. (9) The Gear particles, “Pe and hyper should, properly, be 
used in these cases, since the word owide is of Greek origin, but 
they are too much alike to be iat without confusion. 
The nomenclature of oxidized bodies being given, that of the 
other binary combinations is strictly in accordance with the princi- 
(a) The phosphoric chloruret is proportional to an oxide of phosphorus; the c: 
bonic chloruret to the oxide of carbon. That is, the equivalent - oxygen in cas 
ease is replaced by an equivalent of chlorine.—Trans. 
(7) Susoxide. The term in the French oe is susoxide. The Bote 
I sup to be from the Latin sursum, through the French sus. The French par- 
ticle sus is only used as in the following sens, _ qurtinalill nap fourth 
more,) ‘ tiers-en-sus,” (one third more. a Trans. 
(9) Superoxide. In the French suroxide.—Trans. 
Vous>X kil: No 2. 33 
