neck are influenced and the result is of course in of a bone disease may receive marked benefit by x ray exposure but conditions affecting the are probably little affected if at all by such treatment though reports of isolated cases claim benefit from it in results are not so uniformly good therefore the treatment should in such cases be used with caution � using this term in the and most sense we may say that where the process is superficial the effect of x ray exposure is very marked and cure follows in most of such cases where the process is deep seated we fear that would dismiss most of the so called by x rays though as will be pointed out shortly we believe that x ray treatment is of service in malignant cases beyond the possibility of operation usually after a comparatively brief treatment ten to twelve x ray of five minutes each for the a smooth is influenced in a similar fashion though results are not quite so uniformly successful et s disease if by of the and may be cured by exposure to x rays but we should hesitate to undertake a treatment unless operation were refused or impossible for deep seated x rays cannot be pronounced a cure and in our opinion operation should never be refused nor delayed for such treatment where however operation may be refused by the patient or where for some reason radical operation is impossible x ray treatment should certainly be applied the distressing symptoms of such cases are relieved by occasional so marked indeed is the apparent benefit that one is often tempted to believe that a cure is being effected the pain the in size may heal up and loss of weight may even be temporarily averted the patient s life is probably prolonged and is certainly made more comfortable while the hope which the relief raises in his mind is good in itself though it should not be encouraged after a time of such apparent benefit the end usually comes suddenly but surely this is better than the long drawn out agony so often observed x ray treatment seems to arrest such a process partially but it looks as if something else were required to complete the cure and for that it seems we must search elsewhere possibly on the other hand the apparent local benefit by way of or of the is accompanied by of which eventually result in death for such treatment of deeply seated a hard should be used and the skin protected by some material such as a piece of leather some workers use so called of heavy material and give long but through some of the materials employed we question if any considerable amount of can reach the patient and a thin of felt or leather is sufficient is an effect of x rays on which we may rely and upon this effect depends its value in certain diseases practical x ray work of the or other hairy parts for removal of superfluous hairs � so called � the treatment is not recommended since in most cases hair grows again on the area unless indeed has been produced when an ugly will probably result repeated will ultimately induce permanent but the risks of or indicate this method of treatment or ring worm � mainly in connection with this obstinate disease have the conditions of been studied thus it is fitting that under this special heading we should describe the process although it is equally for any other condition demanding a effect is here desired with one exposure and to measure the correct duration of that under prevailing conditions of and current a s is simultaneously exposed to the rays the principle of this is described on p and will be dealt with later in this description of the operation only the area affected should be exposed to the action of the rays and the rest of the head must be protected by suitable means the details of which will depend upon the form and extent of the area affected thus the head may be covered by a of sheet lead or other material to the rays in which holes are cut opposite to each part to be exposed a better arrangement is that illustrated in fig and described on p a of appropriate size being fixed in the shield there gives the correct distance for exposure as well the area exposed must be large enough to include a fair margin of apparently healthy but possibly surface where the whole head is affected exposure is best made in three at one sitting this may be done by cutting from a sheet of lead a with a central angle of � mould the remainder over of the head and change its position between each exposure so as to expose in turn three the total preliminary preparation being completed as found suitable for the case set the � by a fixed � with its at a distance of inches or from the head to check the exposure a s must be exposed to the free action of the rays at a point between the of the and the area exposed � that is inches or j from either various have been devised to support the under proper conditions at this distance but the best arrangement is the shield already described at one side of the brass ring forming the front opening of the shield will be found a brass which is being held in position by a small spring in a hole in this is placed a and the being inserted bears the so that it is exposed to the full action of the rays during exposure the about f inch in are usually supplied in a with some instructions for use on the front page are two small of paper coloured of the tint of the original and of the tint assumed by 