Excerpt from New England Medical Monthly: September, 1908 It is unnecessary to go further in this line of thought, as physicians are already fully aware of the difliculties of proper diagnosis with artificial light. Are, some phases of the subject which are not always given consideration. In the case of an ex amination of the blood to discover an anemic condition, it should be remem bered that, if examination under arti ficial illuminants is made, with an illuminant giving an excess of red, the condition of the blood appears much better than it really is, and under an illuminant which is deficient in red, the apparent condition of the blood is much worse than it really is. So important is accurate judgment to the physician and the surgeon that the adoption of acetylene, which is really daylight at night, in the operat ing rooms of hospitals is almost a necessity. The spectral similarity between acetylene and sunlight has only been recently brought to the at tention of physicians, and its advan tages were immediately recognized. 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.