The Sun.
London, England, 1848-06-07 00:00:00

S TRICTURES OF THE URETHRA : Prevalent and Daugerous
Errors in their Treatment.
Just published, price 55., (by post free, 65.,) Svo., in cloth,
THE PATHOLOGY AND RATIONAL
TREATMENT of STRICTURES of the URETHRA, in all
their Varieties and Complications. With Practical Observations on
the Use and Abuse of Instruments in the Treatment of Urethral Dis-
eases, showing that the unnecessary employment of instruments is
a frequent exciting cause of stricture, and that a want of practical
knowledge and manual dexterity in their use, when necessary, is
the
source of most of the severe, long-protracted, arid complicated cases
of that disorder so fatally prevalent. The whole illustrated by nu-
merous cases.
By F. B. COURTENIY,
Published by H. Ilailliere, 219, Regent-street; Maclachlan, Stew-
art, and Co., Edinburgh ; Hodges and Smith, and Funnier and Co.,
Dublin ; Simms and Denham, Manchester ; Deighton and Laughton,
Liverpool; and all Booksellers.

REMOVED TO 37, BEDFORD-SQUARE.
DR. LKMERT ON THE SECRET INFIRMITIES
AVOF YOUTH
AND MATURITY.—WITH 40 COLOURED ENGRINGS ON
STEEL.
Just published, and may be had in French or English, in a Sealed
Envelope, 2s. 6,1„ or post-free, from the Author, for fcrty-two
Stamps,
SELF-PRESERVATION; a Medical Treatise
on the Physiology of Marriage, Infelicitous and Unproductive
Unions, and the Secret Infirmities and Disorders of Youth and Ma-
turity, usually acquired at an early period of life, which enervate
the physical and mental powers, diminish and enfeeble the natural
feelings, and exhaust the vital energies of Manhood ; with Practical
Observations on the Treatment of Nervous Debility and Indigestion,
whether arising from these causes, close study, or the influence of
tropical climates: Local and Constitntional Weakness, Syphilis,
Stricture, and all Diseases and Derangements resulting from Indis-
cretion. With Forty coloured Engravings, illustrating the
Anatomy, Physiology, and Diseases of the Reproductive Organs,
explaining their structures, uses, and ftinctions, and the various
injuries that are produced in them by solitary habits, excesses, and
infection. BY SAMUEL LAWERT, M.D.,
37, BEDFORD-SQUARE, LONDON.
Doctor of Medicine. Matriculated Member of the University of Edin-
burgh, Licentiate of Apothecaries' Hall, London, Honorary Member
of the London Hospital Medical Society, &c.
Marriage requires the fulfilment of several conditions. in order
that it may be really the cause of mutual happiness. Could the
veil, which covers the origin of domestic wretchedness, he raised,
and its true source in every instance disclosed, in how many could
it be traced to physical disqualifications and their attendant disap-
pointments. Excesses aro always injurious ; the gift, which when
used in moderation is fraught with advantage, becomes, when
abused .the prolific source of mischief and of greater or less injury
to the constitutional and vital powers. The particular excesses. on
the nature and COIISCO uence of whieh this Treatise professes to dilate,
are productive of greater severity of misery to the human frame,
than any other to which it is subject.
This work contains an accurate and complete account of the
Anatomy and Physiology of the Reproductive Organs, and of
their relative conditions in health and disease. It deservedly
requires the closest attentien and study, for what subject can
be of more importance than the preservation of the health
and of the physical capabilities of which every man should
be possessed. it unfertimately happens that the unhappy
victim of excessive indulgence and vicious habits, whether acquired
in early life or from the follies of advanced age, while suffering
trons their invariable consequences, unwisely entertains a fear of ap-
plying to a qualified physician for relief. Shame and the dread so
frequently, but erroneously entertained that these complaints are
beyond the reach of art, alike restrict him and preventre t his
thus seekihe
ng
'or assistance where alone it can be procured. ,
forgets that accurate discrimination n ascertaining the causes of
disease, sympathy with the sufferer, and, above all, secrecy, inva-
riably characterise the intelligent and practical physician, and to the
medical man who can show by hi:, posse,sion of the requisite legal
qualitications that he is entitled to esteem and respect in his profes-
sional pursuits, the utmost confidence should be extended. ins
LAWERT has obtained the highest medical honours, as his diploismas
certify, and the great extent of his practice for many years a
suarantee for his professional experience, which has reference almost
solely to the treatment of these diseases.
Published by the Author, and may be had of Kent and Richards,
52, Paternostetsrow; Ilahnay, 63, Oxford-street; Starie, Tichborne-
street, Haymarket ; liranscil, 115, Fleet strees ; Gordon, 146,
Leadenhall-street, London; or, free by post for forty-two stamps,
from the Author, who may be consulted on these disorders personally
or by letter. daily, from Tee till Two, and from Five till Rig)... at his
roAldance. 37, daily
lawn,inn

FARADAY'S LECTURES ON ELEC-

T RICITY.
On Saturday Professor Faraday delivered his fifth
lecture at the Royal Institution, on the allied pheno-
mena of the chemical and electrical forces. In the
preceding lecture he had exhibited some of the effects
of the voltaic battery, when the passage of the elec-
tricity is interrupted ; in this one he showed the
phenomena that occur during the regular flow of the
electric current through the wires without anv
interruption of the circuit. The simplest evidence
that a constant action is going on in the conducting. wire
is afforded by the deflection of a magnetic needle, when
a wire that connects the two poles of a battery is hold
over it, parallel to the direction of the needle. Small
pieces of bent iron, resting on the wire, became mag-
netic when the electric circuit was completed, and when
the wire was twisted several times round a thick piece
of iron, to increase the effect, the magnetic power
became so strong, that it lifted an anvil of at least
fifty pounds weight. The heating power of the voltaic
battery, when the current is passing uninterruptedly
along the wires, was shown by its making charcoal,
and various thin wires red hot, in which state they
would have remained so long as the battery continued
in vigorous action. The conducting power of gold
being greater than that of platinum, a wire of gold
became a much brighter red by the passage of electricity
throught it, than one of platinum ; and yet,':.when the
two wires were joined together, the platinum wire
became red hot, whilst the gold was not perceptibly
heated. This anomaly Professor Faraday explained, by
stating that the platinum wire obstructed the passage of
the electricity, consequently the gold wire, whiclfwas
capable of conducting a larger quantity, did not become
sensibly affected by the small quantity which the pla-
tinum allowed to pass. The increase of heat diminishes
the conducting power of metals, and several experiments
were shown, for the purpose of illustrating this peculiar
property, the red heat of one part of a fine communi-
cating wire being brightened when another part of the
wire was cooled, and the contrary effect being produced
when the wire was heated by a spirit lamp. A great
part of the lecture was occupied in explaining the two
most popular theories respecting the nature of electricity,
neither of which, however, Professor Faraday is inclined
to adopt. One supposition, is that electricity is an ethe-
real imponderable body, distinct from the substances in
which it is excited, and that it is transmitted along wires
in like manner to the rushing of fluids through tubes ;
the other, and the more beautiful theory is, that
the phenomena of electricity are produced like sound, by
vibrations. The Professor performed several experi-
ments, for the purpose of showing the facts adduced
in support of each of these theories. One of the diffi-
culties to be overcome in any theory that purports to
explain the nature of electricity, is to account for
the instantaneous transmission of the power,
which has been ascertained to exceed the rate of
five thousand miles in a second. In support of the
first theory, it is urged that as there is an im-
mense difference in the rapidity with which different
fluids pass along tubes—water, for example, flow-
ing slowly in comparison with air, and air slowly in
comparison with hydrogen gas—so it is asserted that
the assumed imponderable fluid may pass with a ra-
pidity vastly greater than hydrogen gas. The vibrations
of sound, however, present much greater similarity
to the transmission of electricity. Though sound
passes in air at the rate of only thirteen miles
a minute, it passes through water four times
as quickly, and through glass sixteen times faster
than through air. There is this resemblance also be-
tween the passage of sound and the transmission of elec-
tricity, that sound may be transmitted insensibly through
solid bodies and become audible at the end. Two curi-
ous experiments were performed to illustrate this pro-
perty of sound. A thin strip of deal was suspended
from ono end of the lecture-room to the other, and
at the farther end it bore against a box. A tuning-
fork when struck and applied to one end of the
strip of wood caused the box at the other extremity to
emit a loud musical sound, though the tuning fork itself
could scarcely be heard. In the other experiment a
rod of metal passed through the floor of the lecture
room, and was placed in connexion with a pianoforte
in a room beneath. When the instrument was
played, scarcely any sound was heard, until a
guitar case was placed on the rod, and then
the notes were distinct and loud, as if proceed-
ing from the guitar. There is a similarity also be-
tween vibrations and electrical shocks, as may be proved
by striking a bar of iron when holding it near one
of the points of vibration, the jarring sensation bear-
ing a close resemblance to a electric shock. This
vibratory sensation is felt yet more strongly when
a wet string is fastened round the wrist, and some one
pulls the end of it through the fingers. Having thus
mentioned the two prevailing theories respecting the
nature of electricity, and supported them by various ex-
periments, Professor Farady left the explanation of his
own views for a future lecture.

THE COURT AND TIMES OF JAMES TAE FIRST. 7;
Edited by the author of " Memoirs of Sophia Dorothea.
This long-expected work has at length appeared. and it
may be asserted that scarcely any similar publication
can exceed the volumes in interest, or rival them in the
extent and variety with which they illustrite contempo-
rary history. Among the innumerable subjects on
which
these volumes afford information, are—the trial of Sir
Walter Raleigh, and his subsequent history—the Gun-
powder Plot—the murder of Sir Thomas Overbury—the
trial of the Earl and Countess of Somerset—the rise of
Villiers, Duke of Buckingham, and his family—the early
history:and death of Henry prince of Wales—the private
lives of Queen Anne of Denmark and Prince Charles—
the stories of Arabella Stuart and Elizabeth Queen of
Bohemia—the visits of the King of Denmark and the
Count Palatine of the Rhine—the Court Masques and
Entertainments—the revels of the Inns of Court, &c.
FOREIGN FRUIT.—The arrivals of fruit from some
of the Continental States have commenced for the season.
The steam-ship Giraffe, from Rotterdam, has brought
teu baskets of cherries, and also some melons. The An-
twerpen steamer, from Antwerp, hus brought twenty-
four' baskets of cherries ; and the Columbine, from
Havre, 191 baskets of fruit, of various kinds ; the pro-
duce of Holland, Belgium, and France respectively.