No. 199. TUESDAY, FEBRUARY 11, 1752

Decolor, obscurus, vilis. Non ille reperam
Caesariem Regum, mec candida virginis ornat
Colla, nec insigni splendet per cingula morsu:
Sed mova si migri videas miracula saari,
Tum pulcros superat cultus, et quidguid Eois
Indus litoribus rubra scrutatur in alga.

CLAUDIANUs, xlviii. 10.

Obscure, upris'd, and dark, the magnet lies,
Nor lures the search of avaricious eyes,
Nor binds the neck, nor sparkles in the hair,
Nor dignifies the great, nor decks the fair.
But search the wonders of the dusky stone,
And own all glories of the mine outdone,
Each grace of form, each ornament of state,
That decks the fair, or dignifies the great.

SIR, -

HOUGH you have seldom digressed from moral subjects, I suppose you are not so rigorous or cynical as to deny the value or usefulness of natural philosophy; or to have lived in this age of inquiry and experiment, without any attention to the wonders every day produced by the pokers of magnetism and the wheels of electricity. At least, I may be allowed to hope that, since nothing is more contrary to moral excellence than envy, you will not refuse to promote the happiness of others, merely because you cannot partake of their enjoyments. In confidence, therefore, that your ignorance has not made you an enemy to knowledge, I offer you the honour of introducing to the notice of the pub

lick, an adept, who, having long laboured for the

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benefit of mankind, is not willing, like too many of his predecessors, to conceal his secrets in the grave. Many have signalized themselves by melting their estates in crucibles. I was born to no fortune, and therefore had only my mind and body to devote to knowledge, and the gratitude of posterity will attest, that neither mind nor body have been spared. I have sat whole weeks without sleep by the side of an athanor, to watch the moment of projection; I have made the first experiment in nineteen diving engines of new construction; I have fallen eleven times speechless under the shock of electricity; I have twice dislocated my limbs, and once fractured my skull, in essaying to fly”; and four times endangered my life by submitting to the transfusion of blood. In the first period of my studies, I exerted the powers of my body more than those of my mind, and was not without hopes that fame might be purchased by a few broken bones without the toil of thinking; but having been shattered by some violent experiments, and constrained to confine myself to my books, I passed six and thirty years in searching the treasures of ancient wisdom, but am at last amply recompensed for all my perseverance. The curiosity of the present race of philosophers, having been long exercised upon electricity, has been lately transformed to magnetism; the qualities of

° In the sixth chapter of Rasselas we have an excellent story of an experimentalist in the art of flying. Dr. Johnson sketched perhaps from life, for we are informed that he once lodged in the same house with a man who broke his legs in the daring attempt.

the loadstone have been investigated, if not with much advantage, yet with great applause; and as the highest praise of art is to imitate nature, I hope no man will think the makers of artificial magnets celebrated or reverenced above their deserts. I have for some time employed myselfin the same practice, but with deeper knowledge and more extensive views. While my contemporaries were touching needles and raising weights, or busying themselves with inclination and variation, I have been examining those qualities of magnetism which may be applied to the accommodation and happiness of common life. I have left to inferior understandings the care of conducting the sailor through the hazards of the ocean, and reserve to myself the more difficult and illustrious province of preserving the connubial compact from violation, and setting mankind free for ever from the danger of suppositious children, and the torment of fruitless vigilance and anxious suspicion. To defraud any man of his due praise is unworthy of a philosopher; I shall therefore openly confess, that I owe the first hint of this inestimable secret to the Rabbi Abraham Ben Hannase, who, in his treatise of precious stones, has left this account of the magnet: stopsospn, &c. “The calamita, or loadstone that attracts iron, produces many bad fantasies in man. Women fly from this stone. If therefore any husband be disturbed with jealousy, and fear lest his wife converses with other men, let him lay this stone upon her while she is asleep. If she be pure, she will, when she wakes, clasp her husband fondly in

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her arms; but if she be guilty, she will fall out of
bed, and run away.”
When I first read this wonderful passage, I could
not easily conceive why it had remained hitherto
unregarded in such a zealous competition for mag-
netical fame. I would surely be unjust to suspect
that any of the candidates are strangers to the name
or works of Rabbi Abraham, or to conclude, from
a late edict of the Royal Society in favour of the
English language, that philosophy and literature
are no longer to act in concert. Yet, how should a
quality so useful escape promulgation, but by the
obscurity of the language in which it was delivered 2
Why are footmen and chambermaids paid on every
side for keeping secrets, which no caution nor ex-
pense could secure from the all penetrating magnet 2
Or, why are so many witnesses summoned, and so
many artifices practised, to discover what so easy an
experiment would infallibly reveal 2
Full of this perplexity, I read the lines of Abra-
ham to a friend, who advised me not to expose my
life by a mad indulgence of the love of fame; he
warned me by the fate of Orpheus, that knowledge
or genius could give no protection to the invader of
female prerogatives; assured me that neither the
armour of Achilles, nor the antidote of Mithridates,
would be able to preserve me; and counselled me,
if I could not live without renown, to attempt the
acquisition of universal empire, in which the honour
would perhaps be equal, and the danger certainly

be less.

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I, a solitary student, pretend not to much knowledge of the world, but am unwilling to think it so generally corrupt, as that a scheme for the detection of incontinence should bring any danger upon its inventor. My friend has indeed told me that all the women will be my enemies, and that, however I flatter myself with hopes of defence from the men, I shall certainly find myself deserted in the hour of danger. Of the young men, said he, some will be afraid of sharing the disgrace of their mothers, and some the danger of their mistresses; of those who are married, part are already convinced of the falsehood of their wives, and part shut their eyes to avoid conviction; few ever sought for virtue in marriage, and therefore few will try whether they have found it. Almost every man is careless or timorous, and to trust is easier and safer than to examine. These observations discouraged me, till I began to consider what reception I was likely to find among the ladies, whom I have reviewed under the three classes of maids, wives, and widows, and cannot but hope that I may obtain some countenance among them. The single ladies I suppose universally ready to patronise my method, by which connubial wickedness may be detected, since no woman marries with a previous design to be unfaithful to her husband. And to keep them steady in my cause, I promise never to sell one of my magnets to a man who steals a girl from school; marries a woman of forty years younger than himself; or employs the au

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