204 Sir Humphry Davy’s experiments on a solid 
chlorine; iodine, likewise, has an attraction for chlorine; it 
appeared, therefore, extremely probable, that euchlorine, or 
the gaseous combination of oxygene and chlorine, would be 
decomposed by heat, and two compounds formed, one of 
oxygene and iodine, and the other of iodine and chlorine, 
or that a triple compound would be produced from which 
chlorine could be easily separated, and on submitting the 
idea to the test of experiment, I found that I had not been 
deceived. 
To produce the compound of oxygene and iodine, it is 
necessary merely to bring the euchlorine and iodine together 
at the ordinary temperature of the atmosphere. As soon as 
the euchlorine comes in contact with the iodine, there is an 
immediate action, its colour changes to bright orange, and 
a liquid is formed. When the euchlorine is in sufficient 
quantity, a white substance likewise appears. By the appli- 
cation of a gentle heat, the orange compound of chlorine and 
iodine may be made to rise in vapour ; and the compound of 
oxygene and iodine remains. 
When this compound is required to be dry, the euchlorine 
should be passed through dry muriate of lime (calcane) be- 
fore it is admitted to the iodine. The apparatus that I have 
employed for producing the substance is a curved bent tube, 
in the form of an inverted L (q), closed atone end, the closed 
leg of the tube being longest, and which serves as a retort 
for generating the gas ; a thin long-necked glass receiver 
for containing the iodine, and a curved tube of smaller dia- 
meter than the first, and cemented or ground into it fpr con- 
veying the gas into the receiver. The muriate of lime is placed 
in some dry paper in the upper part of the large curved tube; 
