2. _“Lost”._ Sievers’ testimony (_Tr. p. 5732_) shows that Hirt said
that the experimental subjects had volunteered, following a lecture by
Hirt. This testimony seems to be quite trustworthy, as it was usual to
make similar experiments on officer candidates of the Academy of
Military Medicine in Berlin. Testimony of Becker-Freyseng (_Tr. p.
8072_) as well as testimony of Sievers (_Tr. pp. 5730-31_); also
testimony of the witness Nales (_Tr. pp. 10409-10471_).