Bacteria / by Dr. Antoine Magnin...and George M. Sternberg.

  • Magnin, Antoine.
Date:
1884
Catalogue details

Licence: Public Domain Mark

Credit: Bacteria / by Dr. Antoine Magnin...and George M. Sternberg. Source: Wellcome Collection.

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    vibrios with Leptothrix. This opinion, winch was not favorably received by the autliors who adopted nearly ail of the generic groups of Ehren- berg and Dujardin, is to-day accepted by many botaniste, above ail since the labors of Colin. (See below: classification.) At ail events, it is to M. Davaine (1859) that we are indebted for clearly pointing out that the vibrioniens are vegetables, nearly allied to the algæ, and especially to the confervæ. This saine author, having observed sorae mo- tionless bacteria, thought it necessary to give this character great considération, and to estab- lish a fourth group, the genus Bacteridium, whic-h lie added to the three otliers admitted by Dujar- din ; but in* this création he was less happy than in his placing the vibrioniens among the vege- tables ; for we shall see further on that this char- acter of mobility or of immobility is not absolute, and that it dépends upon the âge of the bacterium or upon certain conditions relating to the medium in whicli it is placed. The most recent complété exposition of the classification and of the ideas of M. Davaine is found in the “ Dictionnaire Encyclop. des Sci- ences Médicales,” art. Bactéries (186S). It may be summed up as follows : — Filaments straight ) Moving sponta-) Rigid. . Bacterium. or bent, but not > neously . . j Flexible. ibrio. in a spiral . ) Motionless Bacteridium. Filaments spiral Spirillum.