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Roche, Faraday quitted him and bookbinding together.
He had heard Davy, copied his lectures, and Written to him
entreating to be released from trade, which he hated, and
enabled to pursue science. Davy recognized the merit of
his correspondent, kept his eye upon him, and when oc-
casion offered, drove to his door and sent in a letter offer-
ing him the post of assistant in the laboratory of the Royal
Institution. He was engaged upon March 1, 1812, and on
the 8th we find him extracting the sugar from beet-root.
He joined the City PhiIOSOphical Society which had been
founded by Mr. Tatum in 1808. “ The discipline was very
sturdy, the remarks very plain, and the results most valu-
able.” Faraday derived great profit from this little asso-
ciation. In the laboratory he had a discipline sturdier still.
Both Davy and himself were at this time out and bruised
by explosions of chloride of nitrogen. One explosion was
so rapid “ as to blow my hand open, tear away a part of
one nail, and make my fingers so sore that I cannot use
them eaéily.” In another experiment “ the tube and re-
ceiver were blown to pieces; I got a cut on the head, and
Sir Humphry a bruise on his hand.” And again, speaking
of the same substance, he says: “ When put in the pump
and exhausted, it stood for a moment, and then exploded
with a fearful noise: Both Sir H. and I had masks on, but
I escaped this time the best. Sir H. had his face cut in
two places about the chin, and a violent blow on the f ore-
head struck through a considerable thickness of silk and
leather.” It was this same substance that blew out the
eye of Dulong.

Over and over again, even at this early date, we can
discern the quality which, compounded with his rare intel-
lectual power, made him a great experimental philos0pher.
This was his desire to see facts, and not to rest contented
with the descriptions of them. He frequently pits the eye
against the ear, and affirms the enormous superiority of the

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