The Sun.
London, England, 1850-01-30 00:00:00

lIERAPATIUS RAILWAY JOURNAL, NOVEMBER 24, 1849.

The " Post-office London Directory" for ISSO is out. It occu.dies
a space on one's book-shelf as lar,.:e as two or threw other good-
sized co:urnes put together, and, in point of utility, especially to
the commercial elasscs, it must occupy a first place in public esti-
mation. In it is contained a mass of most useful In'brination ;
information that is not to be found elsewhere. Additions and
corrections are observable 'n the present edition of the " Post-office
. .

Uirecto y ;" so that the Messrs. Kelly appear determined to dist ance
all attempts at competition and undermining, whether fram a host
of little competitors to purtrt of 'the work--constantly appearing
and as periodically dying off -or from Members of Parliament,
fur be it remembered that some time - ago, certain gentleman
of the Lower House, seeing so great and important a work
successfully conducted by private enterprise, thought it time
for the Government to stop and take possession. A little delibera-
tion, however, soon taught them that though the position of head
of the " London Directory" was a desirable post to occupy, it was one
which they could not manage without encountering too much
labour and risk of failure. The " Post-office Directory" bas now
re ached its 51st year, a good age, but it seems to be all the better
for it, and likely to improve in appearance every year that it
grows older. We think the public are much indebted to Messrs.
Kelly for the great cxerticns they evidently bestow in the pro-
dy.cCion of a work of so much national utility. It is a work of
every day reference which no person in the active walks of life
should be without.
Kelly and Co., Old Boswell-court, Temple-bar, and all Booksellers

ARGYLE SUBSCRIPTION ROOMS, Great
windmill•strect, St. James's.

Musical Director and Conductor, M. LAURENT, jun.
This ACADEMY, for Tuition and Practice of DANCING, is
NOW OPEN for the Season. Tetching by Professors Calkins,
Moxey, and Franeeni. •
For Terms of Private Tuition apply at the office.--le•ms of Sub-
scription, for morning and evening practice :--Six months, 51. 59 ;
one month, 11. is.; one evening, Is. Subscribers' tickets not
transferable.
• The Academy will open for evening practice at a Quarter to Eight
oieiock, awl terminate at Half-past Eleven precisely.
The BENEFLP of M. LAURENT, jun., is fixed for MONDAY
EVENING, the 4th of February.

LA'MERT ON THE SECRET INFIRMITIES OF YOUTH
AND MATURITY.-WITH 40 COLOURED ENGRAVINGS ON
STEEL. _ .

rust pubished, and may be had in French or English, in a Sealed
Envelope, 2s. 6d., or post-free, from the Author, for forty-two
.tamps,
QELF-PRESERVATION; a
Medical Treatise on the Physiology of Marriage, and on
the Secret Infirmities and Disorders of Youth and Mcurity,
usually acquired at an early period of life, which enerrate
he physical and mental powers, diminish and enfeeble the natural
Min g's, and exhaust the vital energies of Manhood ; with Practice.
014ervations on the Treatment of Nervous Debilit:, and Indigestion,
arising from these causes, close study, or the Influence Of
zopical climates; Local and Constitutional Weakness, Syphilis,
Stricture, and all Diseases and Derangements resulting from India-
;lntim. With Forty coloured Engravings, illustrating the
Xnatomy, Physiology, and Diseases of the Reproductive Organs,
explaining their stractui es, uses, and functions, and the various
Iljuries that are produced in them by solitary habits, excesses, and
lifection. BY 'SAMUEL LA'MEIIT, M.D.