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Colonist, Volume LI, Issue 12494, 22 March 1909, Page 2

" A new system of long-distance telephoning over iron wires — the joint invention of a Russian engineer and a student— has beeh successfully tested along the Warsaw railway .'. line between St. Petersburg and Vilna. With the aid of an apparatus for increasing the volume of sound, the speakers could be heard quite distinctly between St. Petersburg and Vilna, a distance of 712 versts. The invention is the more valuable inasmuch as the Russian telephonic services are frequently interrupted owing to thefts of the copper wjre how employed.