National Geographic : 1928 Oct
© E. M. Newman "IN THE WINK OF' AN EYE" SHE GETS HER NUMBER! Sweden has one of the most highly developed telephone systems in the world (see, also, text, page 469) ; even the small towns have their street booths. Yet, side by side with a modern invention such as the telephone, Leksand and other more remote villages will use an antiquated device for fire alarms, whereby one "breaks the glass and blows the horn." But elec trical fire-alarm boxes are gradually being substituted. Photograph by Donald McLeish ROCKY ISLANDS OFTHE WEST COAST NEAR GOTEBORG Many of the islets on the southwest and east coasts ofSweden are crowned with small lighthouses, which are regulated byclockwork and do not require attention for months. The automatic light buoys which guide ships through the Panama Canal and other important channels are based on a Swedish invention. Modifications ofthem are used aslight signals for railways, city traffic, and air routes.