wn life, comprising discoveries, or hints at discovery,
in science, through means little cultivated in our age. You will not
be surprised that before selecting you as my heir and executor, from a
crowd of relations not more distant, I should have made inquiries in
order to justify my selection. The result of those inquiries informs
me that you have not yourself the peculiar knowledge nor the habits of
mind that could enable you to judge of matters which demand the
attainments and the practice of science; but that you are of an
honest, affectionate nature, and will regard as sacred the last
injunctions of a benefactor. I enjoin you, then, to submit the
aforesaid manuscript memoir to some man on whose character for
humanity and honour you can place confidential reliance, and who is
accustomed to the study of the positive sciences, more especially
chemistry, in connection with electricity and magnetism. My desire is
that he shall edit and arrange this memoir for publication; and that,
wherever he feels a conscientious doubt whether any discovery, or hint
of discovery, therein contained would not prove more dangerous than
useful to mankind, he shall consult with any other three men of
science whose names are a guarantee for probity and knowledge, and
according to the best of his judgment, after such consultation,
suppress or publish the passage of which he has so doubted. I own the
ambition which first directed me towards studies of a very unusual
character, and which has encouraged me in their pursuit through many
years of voluntary exile, in lands where they could be best
facilitated or aided,--the ambition of leaving behind me the renown of
a bold discoverer in those recesses of nature which philosophy has
hitherto abandoned to superstition. But I feel, at the moment in
which I trace these lines, a fear lest, in the absorbing interest of
researches which tend to increase to a marvellous degree the power of
man over all matter, animate or inanimate, I may have blunted my own
moral perceptions; and that there may be much in the knowledge which I
sought and acquired from the pure desire of investigating hidden
truths, that could be more abused to purposes of tremendous evil than
be likely to conduce to benignant good. And of this a mind
disciplined to severe reasoning, and uninfluenced