Julius Theodor Christian Ratzeburg

Julius Theodor Christian Ratzeburg.

Teachers of the school of forestry in Neustadt-Eberswalde around 1868 (from left): Robert Hartig (embracing Peter Danckelmann), unknown, Julius Theodor Christian Ratzeburg, Bernhard Danckelmann, Adolf Remelé, Wilhelm Schneider and Wilhelm Schütze

Image from Die Waldverderber und ihre Feinde

Julius Theodor Christian Ratzeburg (16 February 1801, Berlin – 24 October 1871) was a German zoologist, botanist, entomologist, and forester.

Biography

Ratzeburg, the son of a professor at the veterinary school of the University of Berlin, was born in Berlin. He studied medicine and natural sciences in Berlin and was principally interested in botany. He became a private lecturer at the University of Berlin in 1828. At this time, Ratzeburg was in contact with Alexander and Wilhelm von Humboldt. Two years later, when the Berlin Forestry School moved to Eberswalde, he became professor of natural history there at the invitation of Friedrich Wilhelm Leopold Pfeil (1783-1859). He founded the botanic garden of forestry at Eberswalde, working there until his retirement in 1869. He returned to Berlin where he died aged 70 years.

Ratzeburg was the author of important works on forestry and forest entomology, and he is considered the founder of the latter discipline. He was notably interested in parasitic species. From 1827 to 1834 he wrote with Johann Friedrich von Brandt Medizinische Zoologie (or Medical zoology), which was a standard work for many years.

Selected works

Entomological works

• Die Forstinsekten, Berlin 1837–1844, three volumes and a supplement.; re-edition at Vienna 1885.
• Die Waldverderber und ihre Feinde, Berlin, 1841, 8th re-edition of Johann Friedrich Judeich (1828-1894) and Hinrich Nitsche (1845-1902) under the title Lehrbuch der mitteleuropäischen Insektenkunde, Vienne, 1885, with a biography.
• Die Ichneumonen der Forstinsekten, Berlin 1844–1852, three volumes.

The parts are:-

• Ratzeburg, J.T.C. 1844 (March 31), Die Ichneumonen der Forstinsekten in entomologischer und forstlicher Beziehung 1:224pp, 4 plates Berlin.
• Ratzeburg, J.T.C. 1844 (August 31), Die Ichneumonen der Forstinsekten in entomologischer und forstlicher Beziehung 3:viii+314pp, 16 plates Berlin
• Ratzeburg, J.T.C. 1848, Die Ichneumonen der Forstinsekten in entomologischer und forstlicher Beziehung 2:vi+238pp, 4 tables, 3 plates Berlin
• Ratzeburg, J.T.C. 1852, Die Ichneumonen der Forstinsekten in entomologischer und forstlicher Beziehung 3:v-xviii+272pp, 3 tables Berlin
• Die Nachkrankheiten und die Reproduktion der Kiefer nach dem Fraß der Forleule, Berlin, 1862.
• Die Waldverderbnis oder dauernder Schaden, welcher durch Insektenfraß, Schälen etc. an lebenden Waldbäumen entsteht, Berlin, 1866–1868, two volumes.

Other subjects

• Handbuch der Zoopharmakologie für Thierärzte . Vol. 1&2 . Berlin 1801 Digital edition by the University and State Library Düsseldorf
• Medizinische Zoologie, avec Brandt, Berlin, 1827–1834, two volumes.
• Abbildung und Beschreibung der in Deutschland wild wachsenden Giftgewächse, with Johann Friedrich von Brandt (1802-1879) and Philipp Phoebus (1804-1880), Berlin 1834; new edition in 1838.
• Forstnaturwissenschaftliche Reisen, Berlin 1842.
• Die Standortsgewächse und Unkräuter Deutschlands, Berlin 1859.
• Forstwissenschaftliches Schriftstellerlexikon, Berlin 1872–1873.

In addition, Julius Theodor Christian Ratzeburg concerned the continuation of the work Getreue Darstellung und Beschreibung der in der Arzneykunde gebräuchlichen Gewächse of Friedrich Gottlob Hayne.

• Getreue Darstellung und Beschreibung der in der Arzneykunde gebräuchlichen Gewächse wie auch solcher, welche mit ihnen verwechselt werden können. 12 Volumes, 1805–1856 (continued from Johann Friedrich Brandt, Julius Theodor Christian Ratzeburg und Johann Friedrich Klotzsch). Digital Edition by the University and State Library Düsseldorf

References

• The major portion of this article was translated from French Wikipedia (visited 27 January 2006).

External links

• Die Schädlinge des Waldes, Insekten und andere Tiere, inclusive 33 farbigen Tafeln pdf download