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Show TUB kOKN ItiBBJ BATg Prereeaev Nail' andreea Harare Ibe rrlaeakOM Vallvge. Nitw Vohk, Marob lS -Fruf. W. p. Magle of Princeton college, spoko be. fore tbo Prlncelou oluh, of New York, at Its regular March meeting lu Ibe Brunawiok on the Itoeutgen rays aud what Princeton was doing toward th development of them, dtereoptloon platra weta exhibited sbowlug the bone structure of small aulmalsaud Illustrating the uae of Iho method lu treatlug dlteaeed parts ol tbe bone and deterllug the prraenoa of foreign sob-stuuoea sob-stuuoea lu the booy and tu watching the progress of recovery from operations. opera-tions. Wltb tbo ray a photograph was taken of Iho band ol Hugh D. Cole, president of the club; of an aluminum box Into wnlob J'b Hedges, Mayor Htroug's private secretary, placed a peuuy, instead or tha 86 gold place that waa aaked of him, and a key, anu a kulfa, Tna plwtutea wora uouealul. Mr. (Ma's bosea showed plainly ud Mr. Hedta' fenny waa in It. 'Tue rays prnetrated all bdtre,' Ibe profaaaor axp ained, "but ludlflnr ent degree, so mat If tuny fall upon a fltioreeoent screen or photegraphlo plate, they est up shadows ol dill-rent degree of Intensliy. By observing thane shadows we oan perceive the preavuoe, tba outline and aomatlmea avaa loms detail of atruoture of Iho boo lea whloh oaat tiiam, even when tbey are o Inclined not lo be vulblo to the eye. By the al l of a to' a, carrying at one end a fluorescent e reen aud ai fitted lo iba ye aa to exoiuue xternal lUtii, these shadows may be onserved directly, ' The rays are also oharsoterlaad by diflerenl power of penetration, t.ioae which are more highly evacuated giving giv-ing tna greater penetration, though nut noesailiy the m- si prooouunad aoiloo on the phot04rapblo plate. Tue bel tune la aiway o a wiln thin walls, and for moat uses, one wltb a very high Vacuum." |
