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Matthias Jakob Schleiden (German: [maˈtiːas ˈjaːkɔp ˈʃlaɪdn̩]; [1] [2] 5 April 1804 – 23 June 1881) was a German botanist and co-founder of cell theory, along with Theodor Schwann and Rudolf Virchow.
The cell was first discovered by Robert Hooke in 1665 using a microscope. The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s. In this theory the internal contents of cells were called protoplasm and described as a jelly-like substance, sometimes called living jelly.
The book, originally published in German, was translated to English in 1847 by Henry Spencer Smith in an edition that also contained the treatise Phytogenesis, by Matthias Schleiden. [ 4 ] Besides the theoretical work, that Schwann called a "philosophical" section of general anatomy , [ 4 ] Schwann provided several plates with drawings of cells ...
1839: Cell theory by Theodor Schwann and Matthias Jakob Schleiden (with contributions from Rudolf Virchow) [85] 1840: Discovery of hemoglobin by Friedrich Ludwig Hünefeld [ 86 ] 1845: Odic force by Carl Reichenbach [ 87 ]
Cells were discovered by Robert Hooke in 1665, who named them after their resemblance to cells inhabited by Christian monks in a monastery. Cell theory , developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann , states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function ...
The following dates are approximations. 700 BC: Pythagoras's theorem is discovered by Baudhayana in the Hindu Shulba Sutras in Upanishadic India. [18] However, Indian mathematics, especially North Indian mathematics, generally did not have a tradition of communicating proofs, and it is not fully certain that Baudhayana or Apastamba knew of a proof.
June 23 – Matthias Jakob Schleiden (born 1804), German biologist. June 29 – Maurice Raynaud (born 1834), French physician. July 27 – Hewett Watson (born 1804), English biologist. October 31 – George W. DeLong (born 1844), American Arctic explorer. November 30 – Jean-Alfred Gautier (born 1793), Swiss astronomer [24]
Even so, botany was greatly stimulated by the appearance of the first "modern" textbook, Matthias Schleiden's (1804–1881) Grundzüge der Wissenschaftlichen Botanik, published in English in 1849 as Principles of Scientific Botany. [93] By 1850, an invigorated organic chemistry had revealed the structure of many plant constituents. [94]