 Haeckel wrote his arguments in the October issue of "Nature" titled "The Present Position of Evolution Theory", to which Virchow responded in the next issue with an article "The Liberty of Science in the Modern State".The debate led Haeckel to write a full book "Freedom in Science and Teaching" in 1879.That year the issue was discussed in the Prussian House of Representatives and the verdict was in favour of Virchow.