Scientific American Volume 88 Number 16 (April 1903) . THE AMERICAN THERMO-CALL BUTTON discovers and reports fire be attarhed to the existing wires IDhotels and manufacturing plants. Inval-uable as a life anil property saver Idresidences. No possible chance for fireto secure headway without soundingalarm. Permanent, not Thermo-Call Co.* Ronton, Mbm,Mfrs. of thermostatic devlcesof all kinds

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