Johann Gerhard Reinhard Andreae
Johann Gerhard Reinhard Andreae (c. December 17, 1724 in Hannover, † May 1, 1793 ibid ) was naturalist, chemist and apothecary in Hanover.
His parents were the apothecary Leopold Andreae (1686-1730) and Katharina Elisabeth Rose Hagen ( † 1752). The grandfather was the pharmacist Leopold Ernst Andreae (c. 1640). His sister was Sophie- Elisabeth ( 1730-1764 ).
After his pharmacist teaching in Hanover in 1744, he began his studies in Berlin, pharmacy, geology and chemistry at Johann Heinrich Pott. He then traveled through Saxony and the mining area of the resin to Frankfurt am Main, where he worked as a traveling pharmacist until 1746. On his return, Paul Gottlieb Werlhof moved, chemistry, mineralogy and metallurgy him to study at the metallurgist Johann Andreas Cramer in Blankenburg. However, Cramer sent him to Leyden, where he studied chemistry at Jerome David Gaubius ( 1705-1780 ). For a few months he was in London.
In 1747 he took over the management of parental Hirsch Pharmacy, which he inherited after the death of the mother. On November 23, 1751 he married Ilse Sophie Müller ( 1728-1795 ).
In 1753 he was back in Frankfurt / Main. In his travels, he made friends with Pieter van Musschenbroek, Jean -André Deluc, Benjamin Franklin and Philipp Friedrich Gmelin.
From August to October 1763 he undertook a scientific journey through Switzerland, where he, especially the Bernese Oberland visited the main Alpine areas. He was interested in herbaria, fossils and crystal collections, salt mines, hot springs and glaciers. When visiting John Gessner Naturalienkabinett he said he expressed doubts about the origin of the most famous Swiss Fossils that Johann Jakob Scheuchzer had referred to as " undisputierliches leftover from the flood ." And they continued representatives of the then ruling Diluvialtheorie. His natural history letters from 1763 to friends were 1764/65 published in the Hanover Magazine, whose staff he was. Füssli printed 1776 in Zurich a splendid new edition with numerous comments Jakob Samuel Wyttenbachs.
On behalf of the Elector of Hanover, he studied at 1765-1769 in Hanover a considerable number of soil types and their use for agriculture.
His Alchemical Letters of 1767 contain pharmaceutically interesting rules. He did preparatory work for the first official pharmacopoeia in Braunschweig, the Dispensatorium Brunsvicense of 1777.
Since 1776, he was a member of the Erfurt Academy of Sciences nonprofit.
From 1778 to 1781 he worked Jakob Friedrich Ehrhart ( student of Torbern Olof Bergman and friend of Carl Wilhelm Scheele ), its natural history collections, including a herbarium, a seed and a collection timber to organize.
His brother in law was Abel Seyler whose children lived with Andreae. He was uncle of the banker Ludwig Edwin Seyler.
Writings
- Letters from Switzerland wrote to Hanover in 1763 ( Online)