Erwin Schrodinger begins by describing the classical system, using the Rutherford model of the atom. During 1934–1935, Schrodinger was primarily situated at Oxford, although he toured the United States during this period. During 1935, he received support from the Imperial Chemical Industries, London, which allowed him some leisure time in which to write an overview of the state of quantum mechanics as he saw it. While the period following the 1927 and 1930 Solvay conferences seemed to be relatively calm, a series of important papers would arrive in 1935. These included Schrodinger's view on the status of quantum mechanics as well as his famous thought experiment involving a cat. Schrodinger's work would be published in three parts in the German journal Die Naturwissenschaften. Schrodinger suggests that the Niels Bohr doctrine is “born of distress.” Almost all the important figures in quantum mechanics were also there—Bohr, Schrodinger, W. Heisenberg, Wolfgang Pauli, Enrico Fermi, and both de Broglies.