New-York tribune., 1903-01-09
ELECTRICITY.
4 .Sheaf of Practical Treot'ses.

ELEcTRIcAL ENGNEERING. ? First Tears
Course for Students BY tyson Se~etL tNoHT T,s
Trated l5rno pp- So b. Van Nostrand Com
ALTERNATING CURRENT MACHINES; BY
samuel Shellon, A. NJ. Professor Of Phyysics Py5
33 Povics6i6 6e6f0sd snd aobsT Mason @ sss5an
5ructor n the Tn Sse naIand 5nST1n9Sc conpany
ELECTRICAL AND MAGNETIC CALCSLA- L f5l,.s-
rs IS Il b o8i4 Van t5dsfrsISS NosfTand Company,
HApBooK OF EkEGFRltSAL IT. teo1se 4AcHddNn61 Ande4son
& A. captain United States Artery Art PTe
gsreo p3qeT 9ne 5ir illustrated octave PIP
Ia D Van Nostrand Company
Mr.. sep-elrs work is designed 70 furnish an
understanding Of the elements of electrical sci
erce for the grade OF students in polytechnic
schools It is good so far as it goes. but II does
not go far enough. While the author recog-
r7izes the rapidly growing use Of electricity Tor
many purposes he ignores the fact that Tor lois
distance transmission only an alternating cur
rent is employed. He fails TO describe the alter
Mating generator or 70 explain what transform
ers or converters are Otherwise the scope Of
his hook is fairly comprehensive. The critical
reader NAV think that Mr.. Sezvel is not always
thoroughly UP 10 date: but the latter may nave
rreferred 10 err on the side Of safety in not as
srr,inC that anything experimental Was fully
adopted
Sheldon ans Mason in the volume now
l,-ous7r ont supplement an earlier one. devoted
exclusively to direct current dynamos ana
motors The simple fact that treatise ike the
later one is possible emphasizes the chief oelect
IF Mr. SewelTs book Professor Sheldon's hlgh
standing as an electrical engineer would ieao
one 10 expect accuracy. freshness ana clear anu
concise treatment and that anticipation IS here
fDnz- realized Not only is the apparatus re-
CURED in alternating current servlc" descrlbeu
t14 The problems raised therein are discussed
The essentials Of power transmission and the
tests which are requisite in alternating current
work also receive due attention,
Tn designing both machinery and lines for any
r1lrl,ose neither efficiency nor economy can De
realized without careful adaptation of means to
ends In electrical in mechanical engineer
ing one should aim TO obtain the largest results
with the least material and cost. Such result
* se~,7ra5 only bv a clear understanding Of the
forces and ressstances TO be dealt with. and their
mathematical relations 10 the conducting IN
sulating and magnetic materials enpioyeo.
Professor Atkinson-who. by the way, should
not be confounded with Philip Atkinson of CHI
csEo another well known writer on eiectrloal
rcience-has materially promoted such calcuia-
-ion in the volume under consideration lhls -
intended primarily for superintendents. engi-
Teers anG oIhele HolulNe :.
large electrical enterprises. Portions OF II
should prove useful for wideawaKe "orkrnen
.bo,,g, and also ia teachers in schools and col
leEes.
Most publications relative TO electrical ma
chinerr. however excellent in other respects are
limited in scope. Captain Anderson. IN 1he
r,-apsrarion Of his handbook, covers a great deal
7f ground. He approaches his subject from 'iie
point of view of the officer in charge ol All 'iie
" ried electrical appliances at q mlil1afS pos'
r7a erds It necessary. therefore. not only TO He-
-, ,s,--,a,,,oe and motors but also steam
to5,ers and engines and at least one representa-
tive internal combustion engine He CONSIDERS
batteries. both primary and secondary 1eie-
r.7or,. searchlights. signal sets. measurements
~ current tests for defects and wiring
look Of ;his kind ought 70 be useful to many
civilians