The Genus Spirillum Ehbg. with Special Reference to Cell Inclusions and the Chromidial Theory

Abstract

Various spp. of Spirillum were isolated from plant infusions by simple plating methods. It was found impossible to isolate S. volutans by any of several methods employed. Review of the literature affords convincing proof that this sp. has not yet been cultivated in pure culture. All spp. investigated deposit fat bodies and volutin. The alveolar or honey-comb structure frequently descr. by previous workers is conditioned by non-stainable fat bodies. Chromidia and spiral nuclear filaments described by other workers are regarded as volutin falls and compressed cytoplasm.