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September 20, 1930

Practical Index to Electro and Photo Therapy Including an Index of Diseases with Descriptive Techniques.

JAMA. 1930;95(12):889. doi:10.1001/jama.1930.02720120057039

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This is a book evidently intended to cover the field of physical therapy—fundamental physical principles, biophysical phenomena, and clinical applications. When so much is attempted by one man it is but natural that he must draw on the work of others for material. Often the selection of material is wise and not infrequently unwise. One chapter is devoted to ozone and its medical applications. The bacteriologic and physiologic action of ozone was thoroughly discussed in an article by Jordan and Carlson, published some years ago in The Journal. These investigators concluded that ozone in sufficient concentration to have any effect was harmful and that ozone had therefore no place in medicine.

Galileo, in his "Dialogues," wrote of Gilbert and his work "De Magnette" as follows:

I extremely praise, admire, and envy the Author, for that a conceit so stupendious should come into his minde.... I think him moreover worthy of

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