Abstract
THE first of Prof. Doflein's studies, that on the Try-panosomata, was noticed in NATURE of June 24, 1909, p. 489. The present work deals with the Spirochaetæ, spirillar micro-organisms met with in ditch water and also in connection with many diseases, such as the relapsing fevers and syphilis, and as commensal parasites in the fresh-water mussel, &c. Some are doubtless vegetable in nature, but many must probably be regarded as belonging to the protozoa. From a critical survey of the minute structure of several species the author divides the spirochaetes into three groups: (1) Spiro-chaeta, with a central staining filament; (2) Cristispira, with a marginal staining filament; and (3) spirochaetes with a flattened band or lamella. He does not consider that sexually differentiated individuals have been proved to occur. The pathogenic forms, like many trypanosomes, are transmitted by blood-sucking arthropods, principally ticks. The essay is illustrated with many figures, and is a useful contribution to this important subject. Probleme der Protistenkunde. By Prof. F. Doflein Die Natur der Spirochaeten. Pp. vi + 36. (Jena: G. Fischer, 1911.) Price 1.20 marks.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
