X-ray illus. 2 pages (pp. 202-203) IN: Deutsche Medicinische Wochenschrift vol. 22, no. 13. 4to, modern wrappers. Leipzig, 1896. First Edition. Whole number offered entire.
Becher introduced a solution of lead into the stomach of a guinea-pig, making it opaque to x-rays; he thus showed the possibility of radiological diagnosis of gastric disease. GM 3516.