The Liverpool Standard and General Commercial Advertiser.
Liverpool, Merseyside, England, 1843-08-08 00:00:00

A. ABRAHAM,

OPTICIAN, MATHEMATICAL AND PHILOSO-
PHICAL INSTRUMENT MANUFACTURER,
20, LORD-STREET, LIVERPOOL,
SOLICITS public inspection to his extensiv; STOCK
of INSTRUMENTS and APPARATU • , manufac-
tured on the most approved constructions .f guaranteed
accuracy, and combining all recent Mee, : nical and Sci-
entific improvements.
SPECTACLES
In every variety of mounting. with I ' ZILIAN PEBBLES,
AZURE Or NEUTRAL-TINTED LE s, carefully adapted
to every description of vision.
MATHEMATICAL INSTRUMENTS for MECHANICAL
and ARCHITECTURAL DRAWING, in great variety, and of
superior quality. ELECTRO-MAGNETIC APPARATUS,
and the improved HELIX and BATTERY, for medical pur-
poses.

- ACHROMATIC OBJECT-GLASSES adapted to MICRO-
SCOPES.

INSTITUTIONS and WHOLESALE ORDERS supplied on
most advantageous terms.
Instruments and Apparatus repaired.

ACHROMATIC MICROSCOPES.
Microscopic investigation being an essential feature in
Physiological Study, the research can only be satisfacto-
rily developed by the aid of ACHROMATIC LENSES ; but
hitherto their expensive character have precluded such
from general use. A MICROSCOPE can now be supplied,
most effectively constructed, with Jointed Pillar and
Tripod Stand, TWO SETS OF ACHROMATIC OBJECT-
GLASSES, TWO HUYGENIAN EYE-PIECES, forming a
combination of Five Magnifying Powers, varying from 30
to 250 TIMES LINEAR, Or 900 to 62,500 SUPERFICIAL
MEASUREMENT, clearly defining the markings of the
most difficult test objects ; a condensing Lens for Opaque
objects; Plate of Diaphragms, Six Objects mounted in
Balsaam, &c„ &c., the whole neatly packed in Mahogany
Case, price £7 15s.
THE NEW POCKET COMPOUND OR SINGLE
ACHROMATIC MICROSCOPE,
From its extreme portability, is admirably adapted for the
BOTANIST and PHYSIOLOGIST, and will be found a most
effective and useful instrument. A Triplet set of ACHRO-
MATIC OBJECT. GLASSES are arranged to be used as a
SINGLE MICROSCOPE, and, from various combinations,
SIX MAGNIFYING POWERS are obtained. Price, com-
plete with necessary Apparatus, in a neat Mahogany
Case, £5 7s. 6d.
Manufactured and sold by A. ABRAHAM, Optician,
&c., 26, Lord-street, Liverpool, and ABRAHAM and
DANCER, 13, Cross-street, King-street, Manchester.

HEADS OF FAMILIES cannot be too strongly /
i
ad-
monished against the common but perni 'ow prac-
tice of administering to their Children in yof their
little ailments those drastic powders, all of hich contain
more or less of Calomel, which they are constantly in
the habit of procuring from their apoth ry or chemist ;
for although the convenience of th ' minute bulk and
absence of nauseating taste is great, et the frequent re-
petition of such medicines produces a softening of the
bones and premature decay of the teeth most prejudicial
to the constitution during the whole period of life. Of
late years there have been made great improvements in
Vegetable Chemistry, by which the active principles of
many simple and innocent medicines have been separated
from their inert and nauseating parts. The greatest boon
has been conferred upon mankind, and more especially
upon the rising generation, by separating the active prin-
ciple of that universally esteemed purgative, Senna, by
Mr. John Freeman, a practical chemist, living in the
Blackfriars-road, who has removed all its nauseating and
griping properties, and rendered it so peculiarly pleasant
to the taste, that children will take it with a positive re-
lkh. This preparation, which he denominates SWEET
ESSENCE OF SENNA, is sold by most respectable
Druggists, extensively patronised by the Queen's Phy-
sicians as a valuable acquisition to the Royal Children,
and its moderate price places it within the reach of the
most humble.—lll's Weekly Messenger, July 31.

Wantrl3.

ALADY, of respectable conne tons, is desirous of
being received into the Fa yof a Gentleman, as
HOUSEKEEPER and Comp ion to his Daughters;
or of engaging with a Single ady, as Companion and
Housekeeper. The Advertis having a small income,
does not wish for any pecuniary return.
Letters addressed B. 8., Standard-office, will have
prompt attention.

A WNTED, an experienced COOK; WAITRESS,
and UPPER KITCHEN MAI . No one need
apply except those who have been ccustomed to the
Business of an Hotel or Restaura and who can pro-
duce an unexceptionable character.
Apply by letter, (pre-paid,) to No. A. 8., Standard-
office.

/
AGRICULTURE.
A GENTLEMAN, residing in the estern Division
13 of Norfolk, can now RECEIV THREE GEN-
TLEMEN desirous of obtaining ractica Knowledge
of Farming.
For terms and references apply by letter, pre-paid, to
A. R. F., Postoffice, Rougham, Norfolk.

LOWER SCHOOL OF THE LIVERPOOL
COLLEGIATE INSTIT TION.
AITANTED, an ASSISTANT E GLISH MASTER.
V V No one not a native of En nd need apply.
Also WANTED, an ASSISTA T ARITHMETICAL
MASTER.
Candidates to forward their applications to the PRIN-
CIPAL of the Collegiate Institution.

WANTED immediately, a TEACHER for CAuvaN's
HospiTAL, in the Parish of Duddiogstone, near
Edinburgh. He must be a Member of e Established
Church of Scotland, unmarried, and no nder 28 years of
age. He will reside in the Institutio and have the sole
charge of the education, moral traini , and religious in-
struction of the boys, whose numb t present is only 20 ;
and he must not only be qualified t teach English, Writ-
ing, Arithmetic, Book-keeping, Latin, French, and Ma-
thematics, and also the first principles of Natural Philo-
sophy, Chemistry, and Botany, but likewise thoroughly
acquainted with the most approved systems of teaching.
Salary £lOO a-year, besides bed, board, and washing;
and the situation to be held during pleasure. He must
be ready to commence his duties on the 7th of September.
Applications, accompanied by testimonials of character
and qualifications, to be made, on or before the 17th in-
stant, to ANDREW Scorr, W.S., 24, Drummond-place,
Edinburgh.
Edinburgh, 4th August, 1843.