Rascher himself made this distinction in his report (_1971-A-PS, Pros. Ex. 49_): He contrasts in the second part of his report the “extremely dangerous experiments” with the “experiments carried out by myself (Rascher) and Romberg,” while he specially asked for an “SS doctor from the camp as witness” for the arbitrary experiments of the second part of his report, as “I carried out these experiments by myself.” But surely Dr. Rascher had his reasons for specially requesting “a camp doctor as a witness” for these experiments (which are described in the second part of his report), but intentionally kept Dr. Romberg away. Dr. Rascher indicates these reasons in his accompanying letter of 5 April 1942, talking about difficulties which the Luftwaffe created for him up to that time, whose removal he hopes for by the intervention of SS Fuehrer Sievers. These difficulties which hindered the research work of Rascher were discussed in various other documents which concerned the use of the low-pressure chamber and its return to Dachau, which the SS tried to arrange but never succeeded. If Dr. Rascher in his intermediary report (_1971-A-PS, Pros. Ex. 49_) emphasized that “only continuous experiments are fatal at heights above 10.5 km.”, this plainly confirms, in Dr. Rascher’s own words, what Ruff and Romberg stated from the very beginning, that two kinds of high-altitude experiments were carried out in Dachau with the low-pressure chamber. The one kind, which Dr. Romberg took part in and Dr. Ruff knew about, was carried out completely humanely and without any pain, and nothing happened; and the other kind, which Rascher carried out alone by order of Himmler, without Romberg and without the previous knowledge of Dr. Ruff, to which at one time an SS doctor was even asked to attend as a witness and which caused several fatalities. This result is confirmed by the second report, which Rascher again alone (without the participation of Dr. Ruff and Dr. Romberg) submitted to Himmler, dated 11 May 1942, as a secret report (_NO-220, Pros. Ex. 61_). He describes here the experiments which he carried out jointly with Dr. Romberg and again states: “On the average, the experimental subjects were in complete accord of their actions at 12-13 km.; no disturbances of any kind in the general condition occurred in any of these experiments,” and even less, of course, a fatality. Only among the experiments described under figures 6 and 7 of this secret report of Rascher’s did fatalities occur, and that “during a continued high-altitude experiment, for example after half an hour in an altitude of 12 km.” But these experiments (according to figures 6 and 7) were the arbitrary experiments in which Rascher had other aims in mind, which had nothing to do with Ruff’s problem of “saving from high altitudes,” and which were carried out by Rascher alone.