On the order of Grawitz and Rascher, a mass experiment on 100 experimental subjects was to be carried out. As Rascher was not present, Neff was in the position to frustrate the experiment by taking the experimental subjects indoors, and therefore no deaths occurred during this experimental series. The longest period that experimental subjects were kept outdoors in the cold was from 6 p. m. of one day to 9 a. m. of the following morning. The lowest temperature Neff can recollect during the dry-freezing experiments was 25° body temperature. As Rascher had prohibited that experiments were to be carried out under anaesthetics, the experimental subjects suffered great pain and screamed to such an extent that it was impossible to carry out further experiments. Rascher therefore requested Himmler’s permission to carry out such experiments in the future in the Auschwitz concentration camp. Non-German nationals and political prisoners were among the experimental subjects. None of them was sentenced to death. They had not volunteered for the experiments. (_Tr. pp. 637-9._) In connection with the freezing experiments, Neff further testified that in September 1942 he received orders from Sievers to take the hearts and lungs of five experimental subjects who had been killed in the experiments to Professor Hirt in Strasbourg for further scientific study. The travel warrant for Neff had been made out by Sievers, and the Ahnenerbe Society paid the expenses for the transfer of the bodies. One of the five experimental subjects killed had been a Dutch citizen. (_Tr. p. 633._) Sievers visited the experimental station quite frequently during the freezing experiments. (_Tr. p. 635._) Neff’s testimony is corroborated by the affidavits of the defendants Rudolf Brandt and Becker-Freyseng (_NO-242, Pros. Ex. 80_; _NO-448, Pros. Ex. 81_) and the testimony of the witness Lutz (_Tr. pp. 266-76_), Vieweg (_Tr. p. 431_), and Michalowsky (_Tr. pp. 878-83_), and by the documentary evidence in the record.