526 Mr. Faraday on the Condensation of the Gases, &c. 
February or the beginning of March, he inquired what I had 
been doing, and I communicated the results to him as far as 
I had proceeded, and said I intended to publish them in the 
Quarterly Journal of Science. It was then that he suggested 
to me the heating of the crystals in a closed tube, and [ pro- 
ceeded to make the experiment which Dr. Paris witnessed, and 
has from his own knowledge described*. I did not at that 
time know what to anticipate, for Sir Humphry Davy had not 
told me his expectations, and I had not reasoned so deeply as 
he appears to have done. Perhaps he left me unacquainted 
with them to try my ability. How I should have proceeded 
with the chlorine crystals without the suggestion I cannot 
now say, but with the hint of heating the crystals in a close tube 
ended for the time Sir Humphry Davy’s instructions to me, 
and I puzzled out for myself in the manner Dr. Paris describes, 
that the oil I had obtained was condensed chlorine. This is 
all very evident from the paper read to the Royal Society, 
though it may seem at first to stand opposed to the notes and 
papers that Sir Humphry Davy communicated in conjunction 
with and after mine. When my paper was written it was, ac- 
cording to a custom consequent upon our relative positions, 
submitted to Sir Humphry Davy, (as were all my papers for 
the Philosophical Transactions up to a much later period,) 
and he altered it as he thought fit. This practice was one of 
great kindness to me, for various grammatical mistakes and 
awkward expressions were from time to time thus removed 
which might else have remained. 
The passage at the commencement of the paper which I 
shall now quote was of Sir Humphry Davy’s writing, and in 
fact contains everything that, and perhaps rather more than, 
he had said to me: ‘* The President of the Royal Society 
having honoured me by looking at these conclusions, sug- 
gested, that an exposure of the substance to heat under pres- 
sure, would probably lead to interesting results; the following 
experiments were commenced at his request}.” I say “rather 
more,” because I believe pressure was not recurred to in our 
previous verbal communication. However, I proceeded to 
make the experiment, and was making it when Dr. Paris 
came into the laboratory as he has described, and my thoughts 
at that moment are embodied and expressed in my paper 
in the following words: “I at first thought that muriatie 
acid and euchlorine had been formed; then that two new 
hydrates of chlorine had been produced; but at last I sus~ 
* Paris’s Life, p. 391. ; 
3 t om Trans, 1823, p. 160.,[or Phil. Mag., First Series, vol. xii, p. 413.— 
DIT. 
