PKjl.Mag.S-5.Vol. 37. PI .XI. 































































Curve, P i*s power impressed on, live prvrrvcuy. 

 „ // is hea.t power developed vn, the, primary . 

 ,, Pz i& power developed, vn, ihue, secoTudary . 

 For a/J, U-Lese t/tree, curves the 

 secondary is short czr'CuiteoL . 

 Carve, Pj is power impressed, on tJbe, prirrtasy when/ 

 the, secxnccLary is open, . 

 ~2^, is todeen, as equod 100 

 Point, *A wher'e waves P &, E, cat is for o£=*-y^ 



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