The Influence of Metallic Tractors on the Human Body: in Removing Various Painful Inflammatory Diseases, ... Lately Discovered by Dr. Perkins, of North America; and Demonstrated in a Series of Experiments and Observations, ..

The Influence of Metallic Tractors on the Human Body: in Removing Various Painful Inflammatory Diseases, ... Lately Discovered by Dr. Perkins, of North America; and Demonstrated in a Series of Experiments and Observations, ..