The Potter journal. [volume] (Coudersport, Pa.) 1857-1872, 1860-12-27
ROHRFR
PRACTICAL C~kLCULETCB

A Book Of Plain Rules and Calculation.
for business Operations, by MARryy
NJ. RonREB, Practical surveyor ami
Con,cyaucer. New Edition, published
by ). b. Lippiacott & Co, PAiladcl-
pLia.
This Work contains 204 pages. and nm
wards Of 800 Rules and Examples. [entircIr
and thoroughly PRACTICAL, such as arise eve,
~ day in the common pursuits of Business
1t has already passed through a number Of
Editions in rapid succession. and is pronopnc.
ed by all classes Of business men TO be tho
UANDIEsT BOOK or REFERENCE, pcrtaiuinr IA
calculations, that has ever been published
Every Example in the book Is WORKED orr
Is FULL and stated in a plain manner. 50 FIAT
when Il parallel case arises, those rcrerr;na
TO the work will End no difficulty in rcadnoe
solving il: in n word, the general arrarca
ment of tEc CALCULATOR is so simple. that
any che who knows how to ADD. s~rBrP.cr
MULTIPLY, OR DIVIDE, can easily solve any or.
binary example that arises in business. OF ar.
rive at the true result Of and estimate reoufr.
ed.
The chic' aim Of the author has been 70 o..
chew theory and philosophy in figures, aim.
ing only at facts and simplicity. BELIEVING
that business men care little about SPENDING
time in discussing the philosophy of rules, Or
the science Of figures, d|ecning it sufficient
for their purpose to be able at a moment. br
reference, to arrive at the TRUE RESULT. The
CALCULATOR differs in this respect from aft
ATithpIctics of the day and kindred wcrkS-
il is a key TO practical business calculations
1t is in the hands Ct the business man what
the key to mathematical works is in the hands
Of the teacher in tie school-room-a facE-
tues time and uSarex correctness.
TEE VYCER TREATS OF
Measurement Of Land, Of Lumber. Of Brick
and Brick Work, OF Stone and Stone Work,
of Grain end Grain Bins, Of Coal and Coal
Bins. dr Wood, of Solids, Of Liquids, of Cir
cuiur. Square, or Irregular Vessels, of Cistcrps
and Watts. Of Roofing, of Plastcrcrs, Painters,
GIaziers', PAYERS, Plumbers Paper Hangers.
and UIho' tercrs' Work. 1t treats of Currcn-
cy and of Foreign and Domestic Exchange. Of
the Decimal System, Of Reduction ana its cx.
tended application to Business. of Simple and
Compound Interest, and their entire applica-
ton 70 Business transactions, with the laws
and usagcs governing and regulating tie same.
together with numerous Ccmercial Forms
illegal Tender. ofPartial Payments on Notes,
Of Banking and Bank Discount, Of Equation
OF Payments and of Partnership Accounts, Of
Assessment Of Taxes, Of Weights and Meas.
ures, Of Square and Cubic Measure, Of the
Square Root and its application TO business,
of Surfaces, Of Excavation, and of many other
important practical matters not within the
scope Of IN advertisement to mention.
IT Is JUST THE BOOK FOR THE
Farmer, the Merchant, the Mechanic, the Ar
tizan, or the Professional man. 1t has prov
en- a valuable auxiliary to the Lawyer, the
Justice Of the Peace, the Convcyancer, and
Real Estate Broker. to the Assessor, the Bank
er, the Clerk, to the Civil Engineer and tie
Surveyor, to the Carpenter and Bricklaycr, Il,
the Stone Mason aud the rIasterer, to the Pa
Hanger and Upho!stercr, to the Payer and
The Tiler, &c, SC. each and all will find it
to their various wants better than
any book published.
EzJ Mailed jpost paid) to any part of the
United States upon receipt Of the money.
Of a single Copy, in Cloth, 90 Gents, or
two Copies for 81 90. Bound in Pockct-b0Ok
Morocco, 81 90 per copy.
Address, N. NJ. ROHRER,
Box 1911 Philadelphia p. o., Pa
lie mo.