Introduction 3 1 



Director, Zutphen Telephone Company, Zutphen ; Messrs. RIB- 

 BINK & VAN BORK, Telephone Engineers, Breda and Amster- 

 dam ; Signer E. GEROSA, Manager, Societa Telefonica Lom- 

 barda, Milan ; Mr. KNUD BRYN, Manager, Christiania Telephone 

 Company, Christiania ; Mr. H. T. CEDERGREN, Managing Direc- 

 tor, General Telephone Company, Stockholm ; Mr. AXEL HULT- 

 MANN, late Chief Engineer, Swedish State Telephone Adminis- 

 tration, Stockholm ; Dr. T. ROTHEN, Director of the Bureau 

 International des Administrations Telegraphiques, Berne ; Dr. 

 WIETLISBACH, Director, Swiss Telegraphic Administration, Berne ; 

 Mr. A. HOMBERGER, Local Telephone Manager, Ziirich ; Mr. 

 MAX HAHN, Vienna ; Mr. C. SIEGEL, St. Petersburg ; M. BER- 

 THON, Societe Industrielle des Telephones, Paris ; Mr. SPRING- 

 BORG, Manager, Aarhus Telephone Company ; Mr. L. M. ERICS- 

 SON, Stockholm M. F. NEUMAN, Director of Posts and Telegraphs, 

 Luxemburg ; Mr. C. G. NIELSON, Chairman of the Drammen 

 Uplands Telephone Company ; Mr. NORSHUUS, Manager of the 

 Bergen Telephone Company. 



The following works have been occasionally used in writing 

 the Belgian, French, Italian, and Dutch sections respectively : 

 'La Telephonic,' E. Pierard; 'Telephonic Pratique,' L. Montillot : 

 ' Telefono,' Domenico Civita ; ' Het Plaatselijke Telephoonnet te 

 Zutphen,' Aug. Collette. The ' Journal Telegraphique,' the official 

 organ of the telegraph administrations, edited by Dr. T. Rothen, 

 has been freely drawn upon, especially Dr. Wietlisbach's descrip- 

 tion of the Ziirich exchange, which he has very kindly allowed the 

 author to use. 



22 ST. ALBAN'S ROAD, 

 HARLESDEN, LONDON, N.W. 

 March 9, 1895. 



