Ueber eine im Gehirn und Rückenmark des Menschen aufgefundene Stubstanz mit der chemischen Reaction der Cellulose. + Nachtrag (pp.3-6).

Virchow, Rudolf

Erscheinungsdatum: 1854

Beschreibung

Virch. Arch. path. Anat., 6. - Berlin, Verlag von Georg Reimer, 1854, 8°, 8 pp., orig. Broschur; 1 Blatt gebräunt. DISCOVERY OF THE NEUROGLIA Rare 3 "Separat-Abdrucke" aus der Berl. Klein. Wochenschrift ! 1) Ueber eine im Gehirn und Rückenmark des Menschen aufgefundene Substanz mit der chemischen Reaction der Cellulose - On a Substance Found in the Human and Spinal Cord with the Chemical Reaction of Cellulose. VA 6 (1854): 135-37. "A pale blue color develops in this substance in the presence of a dilute solution of iodine, the color turning "a beautiful violet" when sulfuric acid is added. Virchow says that cellulose, long since recognized in plant tissues, was first found in animal tissues (of ascidia) by Carl Schmidt, and that his findings were confirmed and extended by Kölliker and by Thomas H. Huxley. Virchow had been struck by the resemblance of the tissues of the human umbilical cord to the "cellulose-tissue" of ascidia and had apparently tried without success to elicit the iodine reaction there and in the eggs of fishes and amphibia. He now finds that Purkinje's so-called corpora amylacea of the human central nervous system give the cellulose reaction in the presence of iodine and sulfuric acid. Since the somewhat similar concentric spherical bodies, known as "brainsand" (Gehimsand) and found in the dura mater, the spinal arachnoid, and the pineal body did not give the reaction, Virchow suggested that Purkinje's corpora amylacea be redesignated "corpuscula amylacea." They were to be found, as far as he knew, only in the ventricular ependyma and its extensions, including the substantia grisea centralis described by Kölliker in the spinal cord. In a brief supplement, Virchow adds that cellulose corpuscles have now been found in the olfactory and acoustic nerves (by himself) and in the optic nerve (by Kölliker)." Rathert 2) Ueber die Erregbarkeit der Flimmerzellen (pp.1-2) - "On the Irritability of Ciliated Cells. VA 6 (1854): 133-35. Jan Purkinje and Gabriel Valentin, the discoverers of ciliated cells, had also discovered agents capable of inhibiting ciliary movement. Virchow, in studies carried out on fresh autopsy material, found that caustic potassium or sodium would stimulate ciliary movement in cells lining the human trachea." Rathert 3) Tonus und Antonie (pp.7-8) - "Tonus and Atony" Rathert Rudolf Ludwig Karl Virchow (1821-1902) pathologist; pathological anatomist; anthropologist; prehistorian and politician. Rathert Nr. 177-179 Garrison & Morotn No. 1268. Bestandsnummer des Verkäufers 67995

Bibliografische Details

Titel: Ueber eine im Gehirn und Rückenmark des ...

Erscheinungsdatum: 1854

Einband: Softcover