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 Andrew Ure, M. D. Professor of the An- 

 dersonian Institution, and Member of the Geological 

 Society. 



(Read Nov. 17. 1817.; 



PART I. 



1 he 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 Humphry 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 

 Vol. VIII. P. II. T t compound. 



