a after exposure to x rays corresponding to the dose which the human is capable of without being followed by or permanent directions are given to place the on a support � that is with a metal � at half distance between and skin since the its original colour if exposed to daylight directions are given that the examination of a during exposure and comparison of it with the standard tint should be quickly done so as to prevent daylight interfering with the action after a few such it will be noted that the colour of the has changed to that of the standard at this point the exposure may be considered complete and the current off under ordinary conditions the exposure from fifteen to twenty minutes one might reasonably say that if note were made of that time and those conditions then by the conditions the time should be a good enough index of the current exposure but as we have already pointed out we cannot rely upon exact of practical x ray work the conditions and no mechanical so far devised can justify making a exposure without some such direct check as we describe it is stated by some workers that the after exposure regain their original colour and can be used again but we prefer to use a fresh for each exposure made about fifteen days after such an exposure � usually on the sixteenth day � the hairs will fall out from the area exposed and with them the during this interval it is customary to apply daily to the part and the surrounding parts some to prevent spread of the process meanwhile for this purpose uses and of in of spirit after the head should be washed daily and any weak hairs left should be pulled out by the thirty fifth day all hair should be out remains for two months and the head should return to its normal condition in about four months this is doubtless a radical cure for and much in advance of older methods so often tedious and there is a slight danger of and burn followed by permanent but this should not happen if proper care be taken on the other hand if the exposure be too short then all the hair may not come out and the process cannot be repeated till after twenty one days from the first exposure but this also should be of rare occurrence it is possible that this treatment good as it undoubtedly is may be replaced soon by another method probably more rapid more safe and less expensive this method is by or with of or of copper but until the process is made more certain in operation we may consider x ray application the best radical cure for � in a similar way to that described for x rays may be used for and similar affections results quoted are very good but of the treatment of either by this method we have little personal experience and are relieved by application of x rays in a rapid and effective manner difficult to explain but none the less definite and valuable and disappear under x ray treatment in a remarkable manner whilst contracted following operation burns or wounds benefit from such exposure is stated in reports from the islands to respond in a promising manner to x ray in a case we had the opportunity of treating for a time we noted distinct improvement of individual the were however advanced and and the patient was very irregular in his attendance at hospital so we had little chance of making observations in such an condition certainly a thorough trial should be given to this form of treatment and should not be exposed if in the acute form but cases derive marked benefit from careful x ray treatment where the hands are affected by either condition such treatment is especially useful and the effect is very in of the or accompanied by much irritation though it may not be evident till after seven or eight days those and similar points are set out in a most instructive manner in a paper by h e which is quoted in the british medical journal for september in all recent works on x ray treatment is discussed and at least one text book is published which solely with this subject hence we do not consider it necessary nor advisable to enter further into detail of suitable cases and port wine is another condition so that any safe treatment promising benefit should certainly have a trial we have had one case recently under x ray treatment with encouraging result and a few cases are reported by practical x ray work other workers where marked benefit has been obtained here a fairly severe reaction must be produced requiring long intervals between the and special care to observe the effect of each previous reaction before another ordinary treatment may respond to x ray which remark may also apply to and favourable reports are published of similar benefit in certain conditions other treatment such as and g marked temporary improvement under treatment by x rays but we have hitherto been disappointed with whenever the treatment is this seems to be the general experience but the relief of symptoms obtained is often valuable in the treatment of disease it is still more to the true position of x rays are conflicting and many of them whilst the effect of contemporary treatment is frequently not thus in most conditions a definite opinion must be withheld the least questionable results in some cases especially of the form the benefit received from x ray treatment is certainly most remarkable where other treatment had failed one such case of apparent cure is reported in the for june forms also receive benefit from the treatment the and long bones being all exposed to the rays other reports state that the treatment is not uniformly favourable but even the admitted 