Show dad AZ M I 1 ex 3 cr el e fair arale y MARY many GRANAM GRAHAM AN INVENTION when uncle john told douglas and dorothy that he was going to tako take them to hear bear a lecture they were just a wee bit disappointed A lecture sounded rather unlike an adventure or seeing some very great wonder it sounded as it if they were to hear something such as they might hear bear almost any time in school they were eager tor for wonders since they had seen so many I 1 even the more eager all the time especially when they were starting out to hear or see something new perhaps said dorothy hopefully it will be interesting mabbe agreed do douglas duglas uglas there might be a lot of very fine pictures to be seen oh but uncle john called it a lecture said dorothy there are often pictures picture with ice lectures for they feel that lectures will be better with nice illustrations said douglas and in that they are right oh I 1 hape so said dorothy rut rt anyway uncle john Is so good that I 1 will enjoy myself if he does and it lie he thinks its a treat for us os as he does docs from the way lie he spoke so they went to the lecture and all that could be seen on the stage when they first got there was a curious machine it look like a picture machine whispered Drug lna lots lets wait and hear what the man has to say about it returned doro ir I 1 1 just a wee bit disappointed thy weve seen so many queer machines that did such wonderful things maybe this la Is one of them gajibe Ma jibe said douglas lut but they had bad to stop talking for the man or on the stage had commenced his lecture ne told them that the queer looking machine was an xray X ray and then ho i how it could look through the thI thickest chest and darkest of materials material and show right inside through its pow erful rays all that he said sounded too mysterious to be true until the children were allowed to look through the mn mi chine douglas and dorothy both siw saw through their hands and looked at the queer bones and strange appearance of their fingers then they looked into the machine av at walls and at various other object it and saw right through them ive never dever seen anything so kiuper sald bald douglas when they were home neither have I 1 said dorothy Dorot liy it males makes me feel as it if my hands my hands bands at all when I 1 see through this machine which shows up ever every bone I 1 its another one of those enven lions alons said douglas that seems almost too loo wonderful to be true an and how bow fine the lecture was after iiii all I 1 for or not only had bad the children heats of the power of the X xray ray thi through b which they had bad looked but they heard of a kind that doctors and dentists dentist have which could take pictures so 60 that people who were could be made well because the picture showed just what was the matter with the sarh people its sti arige said dorothy that epry tines fines scein to have its own wonderful ues then uncle john told them a funny story a 11 dentist had told him when rhen he was in the navy the dentist told me uncle john raid that they wonted to ninke make the nien men very careful of the instruments they used and so tiley put up signs aull oil over such as IDao danger gerl 1 be cautious and avoid serious accidents the dentist said that the ones who heeded the notices were patients who ho come came into the room and saw these signs and did not know what they were going to have happen I 1 hut the men were ivere careful and there was oo no need to worry the pa talents so the notices were taken down hut but they were terrified as one can imagine when they saw such signs about the wolla walls por ir they nude made the signs very prom inert and extreme so none of the workers would be careless they had not intended them to he be seen by patients I 1 though they might have thought uncle john added that patients were going to have their teeth fixed I 1 |