Show A Wooden Balloon Many things have happened since tho time of tho Montgolflers and perhaps per-haps the most remarkable of all is the invention of a German engineer Herr Rettlg Instead of having for the envelope en-velope of his balloon silk or gold eaters eat-ers skin ho has adopted wood The new nerostat Is 130 meters long with a diameter of 15 moters It has also two motors The wood used In the construction con-struction of the envelope Is Canadian pine Herr Rettig claims that he will effect a saving of gas to an enormous extent that his envelope will not bo affected by the suns rays since wood Is a bad conductor of tho heat He says that hIs envelope will hold the gas t for weeks and that he will reach con slderablo altitudes Her Rettig declares de-clares that ho has solved the problem of long distance for Instance he will t be able to cross the Atlantic |