Mr. Faraday on the Condensation of the Gases, $c. 525 
portant of Dr. Wollaston’s corrections as an illustration. At 
the end of the paragraph at the bottom of page 291, I had 
expressed the sense thus: ‘¢ But what I thought to be attraction 
and repulsion in August 1821, Dr. Wollaston long before per- 
ceived to be an impulsion in one direction only, and upon that 
knowledge founded his expectations.” This he altered to: * But 
what I thought to be attraction zo and repulsion from the wire 
in August 1821, Dr. Wollaston long before perceived to arise 
from a power not directed to or from the wire, but acting circum- 
Serentially round it as axis, and upon that knowledge founded 
his expectation.” The parts in Italics are in his hand-writing. 
With respect to the condensation of the gases, I have long 
ago done justice to those to whom it was really due, and now 
approach the subject again with considerable reluctance; for 
though I feel that there is some appearance of confusion, still 
I regret that Dr. Davy did not leave the matter as it stood. 
All my papers on the subject in the Transactions of the Royal 
Society had passed through the hands of Sir Humphry Davy, 
who had corrected them as he thought fit, and had presented 
them to that body. Again, all the facts that Dr. Paris has 
stated upon his own knowledge* are correct; he made that 
statement as his own voluntary act and without any previous 
communication with me, so that I think I might have been left 
in that silence which I so much desired. 
The facts of the case, as far as I know them, are these: In the 
spring of 1823, Mr. Brande was Professor of Chemistry, Sir 
Humphry Davy Honorary Professor of Chemistry, and I 
Chemical Assistant, in the Royal Institution. Having to give 
personal attendance on both the morning and afternoon che- 
mical lectures, my time was very fully occupied. Whenever 
any circumstance relieved me in part from the duties of my 
situation, I used to select a subject of research, and try my 
skill upon it. Chlorine was with me a favourite object, and 
having before succeeded in discovering new compounds of 
that element with carbon, I had considered that body more 
deeply, and resolved to resume its consideration at the first 
opportunity: accordingly, the absence of Sir Humphry Davy 
from town having relieved me from a part of the laboratory 
duty, I took advantage of the leisure and the cold weather and 
worked upon frozen chlorine, obtaining the results which are 
published in my paper in the Quarterly Journal of Science 
for the 1st of April 18234. On Sir Humphry Davy’s return 
to town, which I think must have been about the end of 
* Paris’s Life of Davy, pp. 390, 391, 392. t Vol. xv. p.71. 
