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The first sixty-two pages are taken up with fundamental physical and electrical facts, such as are given in a course of high school physics. The biologic action of light is discussed on pages from 73 to 103. Pages from 113 to 226 are devoted to clinical procedures, with a great deal of emphasis on autointoxication and colonic flushing. On pages from 143 to 176 diseases of the skin are dealt with, largely from the standpoint of light therapy.
The text is verbose, arrangement is often illogical and undue repetition is apparent. It contains many glaring errors, such as: "Seborrhoeic Eczema — Affection of the sudoriferous glands," and "Sycosis, Eczema of the Hair Follicles." In the discussion of psoriasis, the author states: "X-rays combined with ultraviolet radiations are probably the best treatment. . . ."
One gathers that cutaneous hyperpigmentation following actinotherapy is produced by the short light waves acting on