The article below was published in the daily newspaper Le Journal des Flandres, Dunkerque, Nord, France, page 3, le 31 octobre 1954.
See the case file.
Vienne. --
A "Stratojet" plane which, every day, flies over the Rhône valley at an altitude of about 10,000 meters, has been taken by some people for a flying saucer.
The chairman of the Vienne Flying-Club immediately dissuaded the overly imaginative witnesses, but a strange phenomenon occurred immediately after the passage of the powerful jet plane. In fact, in the sky, kinds of parachutes were formed, animated by bizarre movements and having the appearance of light veils which soon reached the ground.
Witnesses of the phenomenon seized this material very soft to the touch and having a little the consistency of rubber. On reaching the ground, it evaporated, probably under the influence of temperature.
One of the witnesses put some of the stuff in a box and had it photographed right away. A few hours later, what was left in this waterproof box had evaporated.
This phenomenon, due to the condensation in the rarefied and cold atmosphere, of certain compounds of the fuel of the "Stratojet", can cause white or irridescent formations moving at high speed at high altitude and thus giving rise to more or less fanciful interpretations.