In February, 1924, the patient whose case is reported was referred to my office from a local machine shop.
Case 1.—
Mrs. E. J. A., American, aged 19, who had been employed in the production of blue prints for six weeks, showed an eruption of five weeks' duration on the forearms, especially in the cubital flexures, the flexor surfaces of the wrists and the dorsa of the fingers and the anterior surface of the neck. On a diffusely erythematous and edematous background, there were many closely crowded vesicles of pin-point size, the typical picture of dermatitis venenata. There were distressing sensations of itching and burning. A tentative diagnosis of dermatosis industrialis was made and an antipruritic calamine lotion prescribed; the patient was directed to remain away from her work. Within a few days, the eruption had subsided. On inquiry, it was found that while at work she had been almost