The arrangement was difficult for Meitner at first. Women were not yet admitted to universities in the German state of the Kingdom of Prussia, which included Berlin. Meitner was allowed to work in the wood shop, which had its own external entrance, but she could not enter the rest of the institute, including Hahn's laboratory space upstairs. If she wanted to go to the toilet, she had to use one at the restaurant down the street. The following year, women were admitted to Prussian universities, and Fischer lifted the restrictions, and had women's toilets installed in the building. Not all the chemists were happy about this. The Institute of Physics was more accepting, and she became friends with the physicists there, including Otto von Baeyer [ de ], James Franck, Gustav Hertz, Robert Pohl, Max Planck, Peter Pringsheim [ de ] and Wilhelm Westphal.