 In 1921, he became a higher inspector and in 1922 Director of the office in Berlin.From 1892, he devoted his spare time to the publication of entomological reviews.From 1912 to 1923, he directed the publication of "Zeitschrift für wissenschaftliche Insektenbiologie" (Journal of scientific insect biology) and "Neuen Beiträge zur systematischen Insektenkunde" (New posts on systematic entomology).