could be accomplished without the patient knowing much about it; the operation was generally finished and the wound healed whilst he slept. Their bodies had great recuperative powers, and the means applied were wonderful in their rapidity of working. The hand of the operator, too, manipulated the part under a huge microscope that magnified the tissues ten thousand-fold. In fact they had all kinds of modifications of the microscope that would fit even internal investigations; one reflected the part in the manner of the reflecting telescope, and turned microscopes of great power on the reflected image. They had surgical modifications of their clirolans and vimolans so that they could examine permanent moving pictures or analyses of the tissues to be investigated. Nothing could escape their methods of finding out defects in the human system. However deep the organ or tissue to be examined might be in the body, it flashed out its forms and processes upon their irelium sheets as they moved. By moving these photographic records rapidly underneath their microscopes the physiological processes of life could be reproduced and examined; stationary, each moment of the processes could be slowly investigated. Their photo-electric instruments could light up and make transparent any stratum of tissue desired, whilst keeping the rest in shadow or dark outline. CHAPTER X THE FIRLA, OR ELECTRIC SENSE THEIR physiology had no longer any need of anatomy or vivisection as its foundation and starting-point. Besides the alclirolans, they had their mirlans or life-lamps, as they called them; and these enabled them to watch any process of the human body and see how it changed under the treatment they applied. These life-lamps appealed not only to their eyes and ears, but to their electric sense. They isolated the magnetic force as well as the sounds and appearance of any section of tissue, and took graphic and permanent record of it, as they did of the changes in form or texture or sound. Every kind of tissue in any organ or limb had its normal magnetic equivalent measured in terms of the personal equation of force and beat of the heart. The slightest deviation from this at any time of the day or month would at once challenge attention and lead to microscopic investigation. They enlarged the electrograph, the phonograph, and the photograph of the point indicated and were thus able to examine under the sarifolan every infinitesimal atom of it in all the aspects which appealed to their sight, hearing, and electric sense. Their sarifolan magnified and interpreted for these investigative senses the graphic record of their mirlans, as the microscope magnifies for the sight. I could see and hear the movements and processes in the tissue, but the electric effect was to me as general as a shock from a galvanic battery; I could not detect anything definite or measurable. But the Limanorans,