De phaenomeno generali et fundamentali motus vibratorii continui in membranis cum externis tum internis animalium plurimorum et superiorum et inferiorum ordinum obvii : commentatio physiologica / scripserunt Joh. Ev. Purkinje et G. Valentin.

Jan Evangelista Purkyně

Date:: 1835

Credit: De phaenomeno generali et fundamentali motus vibratorii continui in membranis cum externis tum internis animalium plurimorum et superiorum et inferiorum ordinum obvii : commentatio physiologica / scripserunt Joh. Ev. Purkinje et G. Valentin. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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$quse adcuratissime in ovis visa describit (\. c. p, 9.). Vibrationem vero prinium certo quodam loco, taiulemque omni superlicie desinere observavit (1. c. No. 3?6. p. 30.3. Idem auctor (Ueber das Baseyn und die Bestinimuiig der Wimpern bei den Jungen der Gasteropoden und die Ursache der S])iralform einschaaliger iSchaalenthiere in the Edinburgh Journ. oL Science No. XIII. July 1837. Heusingers Zeitschrift fiir die org. Phjsik. Bd. I. 1837. 8. p. 383 sqq.) in Buccini undati et Purpur» lapilli embryonibus celerem et continuum liquoris amnii in anteriorem corporis paitem omiii evolutionis ovi stadio dirigi viderat motum, quem ciliis in margine duorum processuum infundibuliformium anterioris corporis partis positis effici microscopio observavit Q. c. p. 384. 65.}. Motum vibratorium primum embryonis viventis esse signura, quum non solum motum, sed formationem cordis antecedat (l. c. p. 365.}. Duos ciliorum circu- los in Buccinis neonatis per tempus aliquot adhuc reperiri (p. 366.}. Eadem cum iu Purpura tum in aliis se observasse molluscis (l. c. p. 367.}. Troehi, Neritse al. era- bryones ciliis longissimis circa axim volvi iisqne ex ovis deinde protrudi; qufe eadem in embryonibus Doridis, Eolidis esse observanda Q). 26?.}. Embryones natos celer- rime moveri ciliis (\. c. p. 368.}. Ev. Home (Philos. Transact. 1837. P. I. p. 39 sqq. Heusingers Zeitschr. Bd .1. p. 391 ^qq.} motum rotatorium embryonum My;B descriptum secundum observationes Baueri a motu vermis cujusdam parasitici derivat! — „but Mr. Bauer's close and per- „severing examination, inquit, „very soon detected the true cause of this strange phe- „nomenon, Avhich Avas produced by a small Avorm that had got into the vesicle, and „while feeding on the embryo, perforraed these revolutions, carrying the young mus- „cle round along with it, although itsell concealed from the eye of the observer (1. c. p. 45.}. Anglus num jocet, an somniet, nescire nos fatemur, C. E. a. Baer (^Beitrage zur Kenntniss der niederen Thiere in Nov. Act, Ac. Cc-es. L. C. Nat. Cur. Vol. xm. P. ii. p. 533 sqq.}, tractatibus annis 1834 et 1835 exaratis, nova multa de animalculis microscopicis communicavit. Aspidogastere, in pe- ricardio Anodontje obvio fusius desciipto (\. c. p. 537—555.} aliisque horum anima- liura entozois explicatis (1. c. p. 556—593.} nomine: chaotisches Gewimmel im Innern der Muscheln 1. c. p. 594 sqq. particulas tractat motu vibratorio rotantes, inter quas et infusoria iimites certos deiiiiitosque esse negat. „Es ist, als ob hier unter den „Augen des Beobachters der Muschelleib in seine kcirperlichen Atome zerfiele und ,.ein jedes fiir sich ein be^sonderes Leben usurpirte, als sollte Oken's Idee vdn dem „VerliaItnisse der lufusorien zu luihern Orgaaismen durch die unmittelbare Anschauung$