PREFACE 



1 HI. present treatise is exclusively of a practical nature. It 



;itutes, 1 nirr.lv a brief introduction to the prac- 



! aspects of tran>torn Ign and Construction. If the 



r ha- 11.. t already ar.juirrd a knowledge of the theory 



und. rlvinu' thr subject, he could not do better than to study 



either Prot'. <M>hrrt Kapp'- u Tnuwformers/ 1 or Prof. J. A. 



'8 "The Altrrnatr-rurrrnt Transf.irmrr." In spite of 



thr t - which have intrrvnird >in<v the publication of 



tin- tioii of tin- latter work, it >till remains, in niv 



of thr very clearest ( \p ^itions of the theory of 



My .\vn work in this field, BO tar as it is set 



forth in --nt volume, simply deals with tin- application 



IC .-f th.' tlie..ry 80 admirably set forth by Profs. 



ipp in the excellent treatises to whirh I have 



Although remarkably t'.-w bouks have been written 



. n.'V.-rthrb-ss tb.-r, . hnilv extrusive 



itm-r mi thr -abject, but it i> in thr form of articles and 



rv. Am.'ii'M thr )MM>t notrworthy recent contributions 



\n- liirMtioiinl the pap-r by Mrssl'S. \. P. M . l-'lrmillLf 



K. M. I .1 . 1 I. ins, n, which was read in November. 1 

 at thr Ii^titutio! il |-Jiu f iiirrr>, and thr p;n 



in -I M i . I . ' . . I the Thirty-second Annual 



ration of i ' i-n. 



A perusal of my n-.-ati^c entitl. .1 Klectri.'itN " i( 'onstable 



ill as^i^t to U und. i -landin.u' of the 



ver fact reactance " and 



11 iin- ' thr I'- QOt ah. ady . 1. ai U I" th.- 



of these terms. 



