track of the days in other ways, such as obtaining information from newcomers. Women's camp About 30 percent of the registered inmates were female. The first mass transport of women, 999 non-Jewish German women from the Ravensbrück concentration camp, arrived on 26 March 1942. Classified as criminal, asocial and political, they were brought to Auschwitz as founder functionaries of the women's camp. Rudolf Höss wrote of them: "It was easy to predict that these beasts would mistreat the women over whom they exercised power ... Spiritual suffering was completely alien to them." They were given serial numbers 1–999. The women's guard from Ravensbrück, Johanna Langefeld, became the first Auschwitz women's camp Lagerführerin. A second mass transport of women, 999 Jews from Poprad, Slovakia, arrived on the same day. According to Danuta Czech, this was the first registered transport sent to Auschwitz by the Reich Security Head Office (RSHA) office IV B4, known as the Jewish Office, led by SS Obersturmbannführer Adolf Eichmann. (Office IV was the Gestapo.) A third transport of 798 Jewish women from Bratislava, Slovakia, followed on 28 March. Women were at first held in blocks 1–10 of Auschwitz I, but from 6 August 1942, 13,000 inmates were transferred to a new women's camp (Frauenkonzentrationslager or FKL) in Auschwitz II. This consisted at first of 15 brick and 15 wooden barracks in sector (Bauabschnitt) BIa; it was later extended into BIb, and by October 1943 it held 32,066 women. In 1943–1944, about 11,000 women were also housed in the Gypsy family camp, as were several thousand in the Theresienstadt family camp. Conditions in the women's camp were so poor that when a group of male prisoners arrived to set up an infirmary in October 1942, their first task, according to researchers from the Auschwitz museum, was to distinguish the corpses from the women who were still alive. Gisella Perl, a Romanian-Jewish gynecologist and inmate of the women's camp, wrote in 1948: Langefeld was succeeded as Lagerführerin in October 1942 by SS Oberaufseherin Maria Mandl, who developed a reputation for cruelty. Höss hired men to oversee the female supervisors, first SS Obersturmführer Paul Müller, then SS Hauptsturmführer Franz Hössler. Mandl and Hössler were executed after the war. Sterilization experiments were carried out in barracks 30 by a German gynecologist, Carl Clauberg, and another German doctor, Horst Schumann. Medical experiments, block 10 German doctors performed a variety of experiments on