The object of this paper is to demonstrate what I believe to be an entirely new method of taking x-ray pictures, the result of this process being to overcome the density. In this new method, as the illustrations show, two tubes or even three are used in the apparatus at the same time, one tube being placed above the subject in the usual manner, while the other tube or tubes, which we will call auxiliaries, are placed at a different angle. An attachment is placed at the side of the subject, which for want of a better name I call a "cut off" or secondary diaphragm, which is placed one-half way or less, on one or both sides of the trunk or head, either posteriorly or anteroposteriorly, and the tube or tubes are so placed that the anode is exactly centered in the middle of the diaphragm, so that