that of Vice-Chancellor in 1948) was Professor Jan Hofmeyr. Hofmeyr set the tone of the university's subsequent opposition to apartheid when, during his inaugural address as Principal he declared, while discussing the nature of a university and its desired function in a democracy, that universities "should know no distinctions of class, wealth, race or creed". True to Hofmeyr's words, from the outset Wits was an open university with a policy of non-discrimination on racial or any other grounds. Initially, there were six faculties—Arts, Science, Medicine, Engineering, Law and Commerce—37 departments, 73 academic staff, and approximately 1,000 students. In 1923, the university began moving into the new campus, slowly vacating its former premises on Ellof Street for the first completed building in Milner Park: the Botany and Zoology Block. In 1925, the Prince of Wales (the future Edward VIII) officially opened Central Block (which includes the Great Hall). The university's first library, housed at the time in what was meant to be a temporary construction, was destroyed in a fire on Christmas Eve in 1931. Following this, an appeal was made to the public for £80,000 to pay for the construction of a new library, and the acquisition of books. This resulted in the fairly rapid construction of the William Cullen Library; opened in 1934. During this period, as the Great Depression hit South Africa, the university was faced with severe financial restrictions. Nonetheless, it continued to grow at an impressive rate. From a total enrolment of 2,544 students in 1939, the university grew to 3,100 in 1945. This growth led to accommodation problems, which were temporarily resolved by the construction of wood and galvanised-iron huts in the centre of the campus (which remained in use until 1972). During World War II, Wits was involved in South Africa's war efforts. The Bernard Price Institute of Geophysical Research was placed under the Union of South Africa's defence ministry, and was involved in important research into the use of radar. Additionally, an elite force of female soldiers was trained on the university's campus. In 1948 the National Party (NP) was voted into power by South Africa's white electorate, and apartheid (Afrikaans for "separateness") policies started to become law. The racist separation policies sparked a response, in 1957, by Wits, the University of Cape Town, Rhodes University and the University of Natal, who issued a joint statement entitled "The Open Universities in South Africa",