. American X-ray journal . ntconditions. Recent Applications of Elcc. Eng. March 24.—The Electrical World. N. Y.—A briefabstract of a recent Franklin Insti-tute lecture; the abstract contains verylittle information. Regarding the na-ture of x-rays, he states that at pres-ent the consensus of the best opinion isthat these rays are produced by trans-verse vibrations in the ether, similar innature to ordinary light, but of a vastlygreater frequency; a quotation from theopinion of Stokes is given. THE AMERICAN X-RAY JOURNAL. SKIAORAPHS. HY DR. OTTO L SCHMIDT. OF CHICAGO. ILL
. American X-ray journal . ntconditions. Recent Applications of Elcc. Eng. March 24.—The Electrical World. N. Y.—A briefabstract of a recent Franklin Insti-tute lecture; the abstract contains verylittle information. Regarding the na-ture of x-rays, he states that at pres-ent the consensus of the best opinion isthat these rays are produced by trans-verse vibrations in the ether, similar innature to ordinary light, but of a vastlygreater frequency; a quotation from theopinion of Stokes is given. THE AMERICAN X-RAY JOURNAL. SKIAORAPHS. HY DR. OTTO L SCHMIDT. OF CHICAGO. ILLS. (Kindly furnished for reproduction in The American X-RaY JoiRN AL ) Fig. i represents a skiagraph of a pa-tient referred to Dr. Schmidt by Dr. F. There was a large dull area over the upper part of the sternum arfd to its right;this was pulsating, but did not was a systolic bruit, differentpulses, and cardiac hypertrophy. Theskiagraph was taken by placing the sens-itized plate on the chest with the dis-. W. Rohr, to whom indebtedness wasacknowledged for permission to print patient was fifty years old, present-ed the typical signs of aortic aneurism. charge tube behind the patient. Thetime of exposure was seven picture shows the inner ends of theclavicles, the sternum, the diaphragm •264 THE AMERICAN X-RAY JOURNAL. and upper border of the liver. The tri-angular shadow of the heart occupies aspace lower than in normal skiagraphsof this region. The large round shadowtaking up the greater part of the centre- ward of the aneurism, on the left side ofthe vertebral column. About one month after the skiagramwas taken the patient died. The post-mortem examination by Dr. H. E. Sau-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrad, booksubjectxrays