Enclosed I am forwarding a short summary on the principal experiments conducted up to date. A detailed report on the practical as well as the theoretical results will take some more time. I shall hurry. Since the material has to be processed the exploitation of the pathological preparations will take about ½ year though the Kaiser Wilhelm Institute for Brain Research will help us, I hope. Tonight I succeeded in seeing Dr. Fahrenkamp who has relatively recovered. He appeared to be very interested and I think there will be a fine and fruitful cooperation. Dr. Fahrenkamp who has an enormous knowledge most amiably promised to help me in everything. He will give to you himself his opinion on my heart experiments. From our conversation I have had the impression that a great field of work will open up to me yet. I thank you, highly esteemed Reich Leader, for having opened these opportunities to me to such an extent. Unfortunately, the extension of my assignment has not been settled yet; in accordance with the present regulations, my assignment will be terminated on 15 May. Thanking you again, I am with most obedient greetings and Heil Hitler! Yours gratefully, [Signed] S. RASCHER Munich, 11 May 1942 _SECRET REPORT_ Based on results of experiments which up to now various scientists had conducted on animals only, the experiments in Dachau were to prove whether these results would maintain their validity on human beings. 1. The first experiments were to show whether the human being can gradually adapt himself to higher altitudes. Some 10 tests showed that a slower ascent without oxygen taking from 6 to 8 hours kept the functions of the senses of the various VP’s [Versuchspersonen—human experimental subjects] fully normal up to a height of 8,000 meters. Within 8 hours several VP’s had reached a height of 9.5 kilometers without oxygen when bends occurred suddenly. 2. Normally it is impossible to stay without oxygen at altitudes higher than 6 kilometers. Experiments showed however that after ascent to 8,000 meters without oxygen, bends combined with unconsciousness lasted only about 25 minutes. After this period the VP’s had mostly become accustomed to that altitude; consciousness returned, they could make knee bends, showed a normal electrocardiograph and were able to work (60 to 70 percent of the cases examined). 3. Descending tests on parachutes (suspended) without oxygen.