. American X-ray journal . nt and never is the same from all tubes under allconditions. The distortion is thereforealways present. There is also distor-tion due to position. This may some-times, possibly, be avoided—but rarely unless impervious right angle devicesare used to correct it. In both instan-ces the distortion can be corrected. Itshould always be corrected before thepicture is taken. Unless this distortion,due to divergence of the x-rays and toposition, is corrected the radiograph isnot true and therefore dangerous evi-dence to the operator and also in thecourt of law. The
. American X-ray journal . nt and never is the same from all tubes under allconditions. The distortion is thereforealways present. There is also distor-tion due to position. This may some-times, possibly, be avoided—but rarely unless impervious right angle devicesare used to correct it. In both instan-ces the distortion can be corrected. Itshould always be corrected before thepicture is taken. Unless this distortion,due to divergence of the x-rays and toposition, is corrected the radiograph isnot true and therefore dangerous evi-dence to the operator and also in thecourt of law. The Dennis fluorometerwill correct these distortions with math-ematical accuracy. No operator canconscientiously do surgery without thisevidence and the time is not far distantwhen his knowledge in medico-legalcases will be put to the severest test.—Ed. PROFITABLE RADIOORAPHY. This radiograph was taken by O. Horner, the eminent radiograph-er, of Cleveland, Tenn. The picture isof a boy of the age of three years, who. \\. O. HORNER. accidentally falling while playing, sus-tained a fracture of the right father of the young lad had pres-ence of mind enough and good commonsense to send for Prof. Horner at thesame time that he summoned the aid ofa surgeon. The Prof, immediately re- THE AMERICAN X RAY JOURNAL. 513 sponded, and took his x-ray apparatusto the residence. An examination withthe rhioroscope revealed the true condi-tion of the injury. The surgeon beingsatisfied with the diagnosis, immediatelyset the fracture. After the work of thesurgeon was done, a second examinationwas made to determine if the hones werein proper apposition ; and then in orderto retain a likeness of the same, Prof. founded, but that there was considera-ble overlapping to the extent of aboutone inch of the fragments. This condi-tion, which is so beautifully demonsta-ted, was all that was necessary tor thesurgeon to employ means to overcomewhat would undoubtedly have been apermanent deform
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