The great danger of the untrained operator is to inject too much at one point and should the operator do this and get it in the canal it will make a lump at one point and press unnecessarily upon the tissues and in time will be displaced and will drag involved tissues with it, producing discomfort by the distortion. POSTURE OF PATIENT FOR INJECTION. The patient for injection should be placed upon the back. When the thigh is slightly flexed the wall of the abdomen is relaxed and should the external ring be not dilated by the protrusion of a large hernia the relaxation obtained by the flexing of the thigh and allowing the flexed leg to rest against the other will relax and dilate the external ring somewhat so that it may facilitate the free passage of the needle and it will also permit of the more free moving of the point of the needle in the loose cellular tissues as the needle is gradually withdrawn. Pelvis high and head low. If the head is dropped low and the pelvis is high, a position easily possible with some surgical chairs, the veins of the cord are depleted and the likelihood of opening or entering a vein is diminished. This posture should only be used where there is a well marked varicocele and the suction method of inserting the needle should always be used. When the veins are dilated the elevation and their depletion may prevent the operator making several efforts to pass the needle without striking them, a thing which is easily possible in the presence of a canal full of dilated vessels. Should there be a well marked varicocele the blunted needle should be used so that it will not be possible to cut a vein by the moving of the needle and at the same time the operator should move the point of the needle slowly from side to side as it is withdrawn. SKIN INFILTRATION TO PERMIT OF INSERTION OF LONG NEEDLE WITHOUT UNDUE PAIN. It may be well to infiltrate the skin slightly at the site of the puncturing of the skin with the larger needle. To do this a weak cocain or alypin solution should be used. This solution is made by the addition of the cocain or alypin tablets to one or two drams of boiled water. A tablet containing six tenths of a grain of alypin or cocain is sufficient for a dram solution. A few drops of this injected over the external ring will permit of the passage of the needle through the tough skin without pain. The pressing of the needle along the roof of the canal is not usually sufficiently painful to call for much complaint from the patient.