Excerpt from A Text-Book of Radiology A considerable amount of space has been devoted to the study Of the X-ray tube, even to the risk Of tedious repetition at times. Though modern tubes are a great improvement on the best to be had only a few years ago, this knowledge is just as important as ever it was if the best results are to be secured, and only by working with X-ray tubes for many weeks, or perhaps months, can that confidence be secured that does so much to make satis factory results the rule rather than the exception. In the chapters dealing with the thorax, the digestive, and the urinary systems, only such conditions as are most commonly met with are referred to, and even these but briefly, but it should be enough to prepare the student to approach larger works with a proper appreciation of what is before him. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.