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Show HEALTH BY UNCLE SAM, M. D. lealth Questions Will Be An-wared An-wared if Sent to Information Bureau, U S. Public HeaJth Serv ice, Washington, O. C. IHE SCHIO K TEST. A fw years ago a very simple test j w-as discovered to tell whether a person per-son could or could not CPtCh dlph-(therla. dlph-(therla. This Is known as the Schick j 'test. It consists In injecting a few; drops of a prepared diphtheria toxin 1 Into the skip, and then watching I whether a characteristic red spot ap- I pear-, where the injection was made. If such a spot does not appear with-I with-I in two or three days it shows that the person 'cannot catch diphtheria. For those in whom the character-1 j latlc redness appears, and who are j therefore known to b liable to catch j diphtheria, doctors now advise a course of protective injections slml-J)ai slml-J)ai tr those which have proven so suc-Ce'SSful suc-Ce'SSful against typhoid fever. This protcrtH treatment consists of three-Miiall three-Miiall Injections, a week apart. There lit) no sore, as there is in smallpox vaccination, and the injections are , harmless. The protection lasts for years, and perhaps even for life Why ont have the doctor make a B :hiCk test on your child, and If this shows the lack of protection against diphtheria have him give the three I protective injections? SORE TRROAT. Q. Plfasc tell me what makes my head and nose stay raw and sore all the time, and what to do for It? What causes coated tongue and parched lip.-; and bad taste in mouth of mornings, and what to do for them" A This question Illustrates a difficulty diffi-culty which I have so frequently dls-cussed dls-cussed in this column. The writer Is 1 under the Impression that merely by I describing a few symptoms it wlil be possible to determine (he nature of his ailment It is as Jf an automobile drlt -cr should write to a service station and say ' What makes my car refuse to take even modernt blip- on high'"' This patient should consult a good physician and submit to a thorough examination on |