PHYSIOLOGIC APPARATUS 749 



The secondary coil, R", consists of a much greater number of turns of 

 finer copper wire, the ratio being about 40 to i, also wound around a spool, 

 aving a tunnel sufficiently large to enable it to slide over the primary. By 

 fee means the strength of the induced current is increased. As a result 

 f the construction of the inductorium, the low electro-motive force of t 

 ell is transformed into the high electro-motive force characteristic of tt 

 iduce d current. As the number of turns of wire in the secondary coil is to 

 he number in the primary, so are the electro-motive forces in the sec. 



^hetclndS colSsllong a track, B, which permits it to be moved 

 oward or away from the primary 6 The distance between the two coils can 

 e measured and the strength of the induced current again reproduced 

 the? things being equal, by means of a centimeter-millimeter scale paste, 



>n Tte1ndsof\e wire of the secondary coil are fastened to two binding 

 >osts to which conducting wires provided with hand electrodes can be 



atta T k he d inductorium may be used for obtaining either a single current or a 



serie A: f ^^^ * ^ ** r r r otive t force> 



. penetrative power, and short duration, the single induced current is a 



^r^p-- . 



The explanation offered ft, this g~:^Eg^%S*$& 



S&rSSKttSSftSS^ *- in * ndghbonng C01k a ^ 



