Ernst Gustav Zaddach (7 June 1817, Danzig – 5 June 1881,

Königsberg Königsberg (, ) was the historic Prussian city that is now Kaliningrad, Russia. Königsberg was founded in 1255 on the site of the ancient Old Prussian settlement ''Twangste'' by the Teutonic Knights during the Northern Crusades, and was named ...

) was a German

geologist A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, althou ...

and

zoologist Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological clas ...

, who made contributions in the fields of

carcinology Carcinology is a branch of zoology that consists of the study of crustaceans, a group of arthropods that includes lobsters, crayfish, shrimp, krill, copepods, barnacles and crabs. Other names for carcinology are malacostracology, crustaceology, ...

and

entomology Entomology () is the science, scientific study of insects, a branch of zoology. In the past the term "insect" was less specific, and historically the definition of entomology would also include the study of animals in other arthropod groups, such ...

. He is also known for his investigations of

amber Amber is fossilized tree resin that has been appreciated for its color and natural beauty since Neolithic times. Much valued from antiquity to the present as a gemstone, amber is made into a variety of decorative objects."Amber" (2004). In Ma ...

found in Samland (

Baltic coast The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from 10 ...

). From 1836 to 1841 he studied sciences at the universities of

Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitue ...

and

Bonn The federal city of Bonn ( lat, Bonna) is a city on the banks of the Rhine in the German state of North Rhine-Westphalia, with a population of over 300,000. About south-southeast of Cologne, Bonn is in the southernmost part of the Rhine-Ruhr r ...

and later taught classes in natural history at the

Collegium Fridericianum The Collegium Fridericianum (also known as the Friedrichskolleg, Friedrichskollegium, and Friedrichs-Kollegium) was a prestigious gymnasium in Königsberg, Prussia. Alumni were known as ''Friderizianer''.Gause, p. 716 History Postcard ca. 1930 ...

in Königsberg. In 1854 he became an associate professor, and in 1863 a full professor of zoology at the

University of Königsberg The University of Königsberg (german: Albertus-Universität Königsberg) was the university of Königsberg in East Prussia. It was founded in 1544 as the world's second Protestant academy (after the University of Marburg) by Duke Albert of Prussi ...

. In 1862, he was appointed director of the zoological museum in Königsberg. The

amphipod Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far descr ...

species ''Gammarus zaddachi'' (Sexton, 1912) is named after him.

Selected writings

* ''De apodis cancriformis Schaeff. Anatome et historia evolutionis'', 1841 (dissertation). * ''Synopseos crustaceorum prussicorum prodromus'', 1844 (habilitation thesis). * ''Untersuchungen über die Entwickelung und den Bau der Gliederthiere'', 1854 – Studies on the development and construction of Articulata. * ''Holopedium gibberum, ein neues Crustaceum aus der Familie der Branchiopoden'' 1855 – ''Holopedium gibberum'', a new crustacean of

Branchiopoda Branchiopoda is a class of crustaceans. It comprises fairy shrimp, clam shrimp, Diplostraca (or Cladocera), Notostraca and the Devonian ''Lepidocaris''. They are mostly small, freshwater animals that feed on plankton and detritus. Description M ...

. * ''Beschreibung neuer oder wenig bekannter Blattwespen aus dem Gebiete der Preussischen Fauna'' 1859 – Description of new or little-known

sawflies Sawflies are the insects of the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay ...

of Prussia. * ''Heinrich Rathke'', 1861 – Biography of

Martin Heinrich Rathke Martin Heinrich Rathke (25 August 1793, Danzig – 3 September 1860, Königsberg) was a German embryologist and anatomist. Along with Karl Ernst von Baer and Christian Heinrich Pander, he is recognized as one of the founders of modern embryolog ...

. * ''Beobachtungen über die Arten der Blatt- und Holzwespen'', 1863 (with Carl Gustav Alexander Brischke) – Observations on types of leaf and

wood wasp Sawflies are the insects of the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plants where they lay ...

s. * ''Beobachtungen über das Vorkommen des Bernsteins und die Ausdehnung des Tertiärgebirges in Westpreussen und Pommern'', 1869 – Observations on the occurrence of amber, and the expansion of

Tertiary Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start ...

formations in

West Prussia The Province of West Prussia (german: Provinz Westpreußen; csb, Zôpadné Prësë; pl, Prusy Zachodnie) was a province of Prussia from 1773 to 1829 and 1878 to 1920. West Prussia was established as a province of the Kingdom of Prussia in 177 ...

and

Pomerania Pomerania ( pl, Pomorze; german: Pommern; Kashubian: ''Pòmòrskô''; sv, Pommern) is a historical region on the southern shore of the Baltic Sea in Central Europe, split between Poland and Germany. The western part of Pomerania belongs to ...

.HathiTrust Digital Library
published works

References

1817 births 1881 deaths Scientists from Gdańsk Academic staff of the University of Königsberg 19th-century German geologists German carcinologists German entomologists {{Germany-scientist-stub