The Sun.
London, England, 1834-08-13 00:00:00

PUBLICATIONS.

uN T„, PROFESSOR YOUNG'S WORKS
,n lit MATHEMATICS, NAVIGATION, MENSU-
NisAION
Vied b.. J. -_.-:
GFOMETRY, TRIGONOMETRY, &c. .
SO u TER, School Library, 73, St. Paule's_Cerhsi.o ch-
A „,rd, London; and sold by most respectable Booksellers.
11
"ALYTICAL COURSE of MATH MATICS,
Con bY J. R. YOUNG, Professor of Mathematics in Belfast
ti,x,rei,ie.
sdin,'NTS of GEOMETRY : containing a New and Univer-
in reatise on the Doctrine of Proportion ; together with
_Nrortoeras,
that are pointed out and corrected several important E
. metto .tave hitherto remained unnoticed in the Writings of Geo-
ers Bvo.
Bs.
US
l'itt . The following brief notices have been selected from. various
°i
-'S
,vetlo.ko
,numerous- for a insertion here, all speaking of al .
la1:011.• Youns(7lall;ig terms ofapprobation :
bestow bs aosns on the theor yof parallel lines, the
his ell: he has bestowed on the doctrine of Proportion, as well as.
iag 41',etions of many errors of preceding geometers, atondsupply
tire e'r defects, together with his minute attention accuracy. l'aent, may be justly considered as rendering hisi ineperformance
suable hl, especially t• the learner.—Philosophical Magazine.
a of tsPieuity, Euclid has no rival,. except, perhaps, in that
abstrti 's work which treats of Geometrical Proportion.ro This is
4 „se' arid subtle, and intricate. The doctrine of p p
iteoZ•eneted with geometry, must necessarily be
from Hence Le-
iet,..ing
.I,as excluded the
subjectconsiderattoioneof his Elements,
b acquiredlt from numerical
illorti:ii.k/Trwhlieadge of the
defect which Mr. Young has ably supplied.
~.,44ehed,„,, we have nelvsear seen a work so free from pretension, and of
"aes'eat merit. Various fallacies latent
.in the
date,
see Ne.elebrated mathematicians, both of ancient an
modernwhich,
k','l.ne)lr'ted out and discussed in a tone of. calm
moderation,
wrld."—
utte„tlt,.oa say, is not always employed in the scientific
of,, 4r.T.
3.1. flazine.
i, a usef 1 i• Young, who
.has distAi
ork of n eiementary treatise on . ,
nigguie
bra ed,
has m s
jeul
af t a
publishedh oar
Elements of Geometry,'
Itith , the same beneficial description,
o sition
tl/48 '‘i.ctes.• The great advantage which students will derive from
(Wli:e:-; ,s, that the converse of every geomet
'nhas never been
%erns: demonstration is possible) is given: queed .tieally
done before. Several other imprTohviesments are intro-
4111y (‘`'Pecially with regard to the doctrine of Proportion), and
4isi t rrers of former geometers corrected. —Sunday Times.
4ed VAIENTARY TREATISE on ALGEBRA; Theorreedtiict
cult jactical ; with Attempts to simplify some of them
Ili r arts of the Science, particularly the Demonstrationeof the
ton"lial Theorem in its most general form ; the Solution. of
?ies:lie°.,lB of. the higher' Orders ; the. Summation of Infinite Se-
e.iirto, Vice
new Edition, greatly improved, in one vol., duode-
4. 0,, A ice ss. 6d.
',lons h new and increnious general method of solving Equa-
s,_
.4.4 d a 15,,,, been recene discovered by Messrs. H. Atkinson, Hol-
"eafvir„"" Horner, independently of each other. For the best prac-
.,nlftitft,of this new method and its applications, consult the le-
ives:;:nor
ttiri eatise on Albra b Mr. J. R. Youn, a work. whichof
ilUtt e!°llr cordial recommendation.
~ P 8 Afathemati„ vol.l, p. 261.
"—Dr. Gregory's Edition
tiO4,,u,
nleermatio' of infinite series the author gives a new and
New °d, which is very easy and extensive in its applica-
A 'lll-i,eastle Magazine, November, 1825.
OGTIsE on the GENERAL THEORY and SOLUTIcteN.
41entar-13RAICAL EQUATIONS, intended as aa.Suppl
,„ ,„1, ~ Y
.ulurne to the Treatise on Algebra, 12m0., 7
nue •'n this volume the recently discovered method of solving
the utitrnea4l. Equations by Continuous Approximation is reduced to
;71)tible:'' smnplicity of form of which that method appears sus-
t,ill
AIETEIPS of PLANE and SPHERICAL TRlG9l\rO-
and le, with its Application to the Principles of Navigation
_
Tri antieal Astronomy with the necessary Logarithmic. and
43.trometrical Tables. 'By J. R. YOUNG. Duodecimo.
of * :)ti?.,, r, with the Mathematical Tables, 12s.
-4‘1,4r. * These reflections have originated in a com. parison
t ger ivoel°ung's excellent treatise on Trigonometry, with some
Welve tears that have made their appearance within the last ten or
ivii4ks tlia, ' and a comparison of all these with the standard
eu te , ekedPrecde them. We have more than once taken occa-
Nits, eialiess opinion we we led to form of this gentleman's
terse
%analytical m th m fcs Brand, though in some respects the
~-'s4;;'' the work itselfa eaffa less'l3ope for the exercise of that
,slsliii ;,4,e.,111ty which Mr. Youngor scope
possesses for exposing the paralo-
h_Altie'e" slipplyin satisf. actorysolutions for the elementary diffi-
reli ~°' science gy
t in many parts we see traces of that same
,e4olitgettniiash-elhe4isti.oo foelogiceland- ph, iloso hical accuracy which dis-
k(' thte, eon .iornieT writings. Ihe great value of this work, we e
v_ sists in its unity of purpose, the continuity of is jeiolantn: icll4l,?g tCeTvevlose attention aid to the student'sare power 0
h involved in the
:ieottolltitiof seriestheboplreoi)leni
underof processes c
onis consideration. Though a suffi-
eraett.44Ther of examples is always a desideratum in every
4r: i 3 great] ook, the clear development
.of the whole pro- iv.. so ea.s,,Y more important; but in Trigor!ometry. examples
.., ps: . ~v corm ~
'loll tittik tlielre
.00 and the results so easily verified, . that
the„„ an in is less necessity for this kind of amplifica-
kpl fore thin any other branch of elementary mathematics. We
kfctlos of-lq Alr. Young has donejudiciously in rather giving ex-
i l't a e°nlPletely-worked questions under each head, than in
I,:e for t,g:esat number of unwrought questions, m.erli,, as an eoadeeri-
hriabteerhta, t.:Vetintet iiiiiipZceiring owaratinogns
Having donefor t whichhis , wa se
thinkr the l4l,t;ee'f),f, elercisos gken irnuthe present work will furnish ample
~Alr. .",.). the most unapt of his readers.
oon ,_
44 h "e feel • g has added a set of logarithmic andidpoedthienrtotatbhleems :, ce,,azard,
~ it proper to state that we have lately
. 1)
clipari,„l"d with others of established reputation on our desk for
*,,,e ete' +about two hundred times, and in no one of these cases
offer Tve h:' an error.
kts_no.f thi_lte, therefore that the account we have been able to
to ration ;21pretending work, will have the effect of. ng the
Ititii vas a bYoou;inge! students (and still more of professional tutors)
attk.,,,,z!e prae,c. eminently calculated to ensure an early intimacy
Iltkt"`tuig th `lee as well as the principles of trigonome.try, and of tek aPpear .e notice of geometers generally to the curious results
trek the : the supplemental chapters, and inducing them to at-
-I,hil of Q72,tension of a branch ofsciece which apparently ad-
osonhi'host unlimited cult. t' " London and Edinburgh
. n eal A.Taf,. . wa ion.
%%mi. e (I_, ~,azine, November, 1833.
cali„ Ili tht:-'ign of this work,' as Mr. Young observes, ' is t.°
ie,tJr, ail(' t theory of plane and herical trigonometry analytt-
ete uetion
,0 present that theor in a form fitted for elementary
,14'ttrib4enfar; I.* * Were nothingyrequiedoiiii trliagnoenometry but an
ls"enowledge of the
and spherical
llet° by al Weshould say, propertieste eautifl geometrical eluci-
'i' 1.,.' eien: Sitason would be sufficient to engage attention.
ate,.grther, ffet to be generally or extensively useful, must be car.-
/veiii4l,, fruro
worse be had to analytical methods of investi-
• °ye,' for tofen, in most cases, results are obtained more con-
',44 appea;_nlng into actual numbers. In these respects Mr.
con-
heir
.. nu arc
ila.". left nothing to be wished for ; having fur-
'4lo, itqlleittihoietrenasi analytica: formulw, and numerous examples of
laen z a su_e results.
isu
valeular
tionladpit!n:ghueidgerenni:::Zoesmi m7,enerdyation of
species of the work
* Mr. Young hastrigo-
'no,w nearly com-

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T A L Y.
I With SKETCHES of SPAIN and PORTUGAL.
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