Show blood never mixed an unusual photograph exhibition was ivas rece recently i antly opened in paris the chief interest in which i Is s in the fact that the subject of the seventy portraits shown is ie a woman of the tha french aristocracy whose family has for m at least years contracted no rn marriage ariage with a foreigner flying down clown a radio Dea fiffe la tho the method by which air pilots especially those choso in the mail service may soon find their way in densest weather to their destinations until the direct directive ivo radio beacon waa devised by the army air service and put into service at mccook field many a flyer lost in an area of storm or fog had to drop dangerously near the ground to got get hij hia bearings visually crashes sometimes resulted now however some landing fields are equipped with the beacon it sends out ftp tw 0 directed radio beams each of chii has hab a characteristic signal when a hyp crosses one of tho the beams beama stud and approaches proa pro ches aches the other he be can lay fi 8 course between tho the tiro two and remain there by noting tho the comparative strength of the two signals following 7 his hia path of equal signal strength to the landing field is then k I 1 |