. The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students . Fig. 243. Congenital malformation of hand. Dr. Schorstein ^ reports a case of congenital absence of both clav-icles, and Dr. Alfred G. Levy,2 a case of arrested development of thethird and fourth ribs. These cases are illustrated by radiographs. 1 Lancet, January 7, 1899, p. 10. - British Medical Journal, May 13, 1899, p. 1150. 464 THE ROENTGEN RAYS IN MEDICINE AND SURGERY Spina Bifida. — In this disease Dr. Carl Beck ^ has found that theradiograp
. The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent : designed for the use of practitioners and students . Fig. 243. Congenital malformation of hand. Dr. Schorstein ^ reports a case of congenital absence of both clav-icles, and Dr. Alfred G. Levy,2 a case of arrested development of thethird and fourth ribs. These cases are illustrated by radiographs. 1 Lancet, January 7, 1899, p. 10. - British Medical Journal, May 13, 1899, p. 1150. 464 THE ROENTGEN RAYS IN MEDICINE AND SURGERY Spina Bifida. — In this disease Dr. Carl Beck ^ has found that theradiograph showed whether there was an opening in the spinal columnand gave some indications of the character of the contents of the Fig. 244. Congenital malformation of right thumb. Man twenty-five years Gushing. Patient of Examination of Frontal Cavities by the Aid of the X-Rays. — Scheier ^ indicates the usefulness of the X-rays in this direction.—For- i 1 JVew ^^.il Record, August 13, 1898, p. 231. ^ Forts I - Geb. d. Roentgenstr.,^.\, i%<Ji-\Z<j^. DEVELOPMEiNT OF THE SKELETON 465 merly the only means of judging whether or not the sound reached thesinus frontalis was the direction it had taken and the distance it hadentered. Now, by means of the X-rays, its entrance or failure to entercan be definitely settled. In some cases in which Scheier used thesound, the X-rays showed that it had reached the cavity easily, and itsshadow could be watched on the screen as it was moved about. Inother cases the X-rays showed that the sound had not reached thefrontal cavity as Scheier had thought from the direction it had takenand the_distance it had entered. He found the screen gave clearerpictures than the
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