SS 
XVII. Experiments on the Relation between Muriatic Acid and 
Chlorine ; to which is subjoined the Description of a 
New Instrument, for the Analysis of Gases by Explo- 
sion. By ANprew Ure, M. D. Professor of the An- 
dersonian Institution, and Member of the Geological 
Society. 
(Read Nov. 17. 1817.) 
PART IL. 
ia Chloridic Theory, though more limited in its application 
to chemical phenomena, than the Antiphlogistic, may justly 
be regarded as of scarcely inferior importance. If established, 
it leads to the adoption of entirely new views concerning com- 
- bustion and many of its. products ; it removes the muriates, a 
set. of apparently well characterised saline bodies, from the 
class of salts altogether ; and it has given birth, by analogy, to 
two new genera of compounds, in which iodine and fluorine, 
like chlorine, act a corresponding part with. oxygen, in the sys- 
tem of Lavoisier. 
This new era in chemical’ science, unquestionably origina= 
ted from the masterly researches of Sir Humpury Davy on 
Oxymuriatie Acid Gas; a substance which, after resisting the 
most powerful means of decomposition which his sagacity could 
invent, or his ingenuity apply, he declared to be, according to 
the true logic of chemistry, an elementary body, and not a 
Vou. VIII. P. ID. Te compound. 
