GENERAL SYSTEMATIC BACTERIOLOGY 321 



produce a high degree of viscosity in urine. The same organism was 

 studied by Rothmann (1904, p. 491) under the name Glischrobac- 

 ierium. This term has not been used as a generic name. It is rejected 

 by Erwin F. Smith (1895, p. 174). 



Gloeosphaeria. Rabenhorst (alg. Mitteleur No. 387) distributed 

 an organism as Gloeosphaeria ferruginea (1854, p. 43). The name has 

 never been recognized b}'- other writers. The organism is one of the 

 iron bacteria, variously termed Chlamydothrix ferruginea, Gallionella 

 ferruginea or Didymohelix ferruginea. The name may probably be 

 regarded as nonvalid as a bacterial generic designation. 



Gloeotila. A name used by Kiitzing (1843, p. 245) for a genus of 

 algae with the following description: 



Trichomata parenchymatica viridia, simplicia, monogonimica, libera. Cellu- 

 lae gelineae delicatissimae, mucosae. Gonidia oblongo-angulata, vel rotundata, 

 hinc flaccida, illinc, turgida (nunquam longitudinaliter divisa). 



Six species are recognized. Later this author (1849, p. 363) included 

 one species: Gloeotila ferruginea which is generally regarded as a 

 synonym of Gallionella ferruginea or Didymohelix ferruginea, one of 

 the bacteria. The description given is: "G. ochracea; trichomatihus 

 hrevissimis moniloformibus, articulis ovato-globosis. Diam. 1/1200 — 

 Gallionella ferruginea Ehrenb." In addition nine other algal species 

 are described. This name is also used by Perty (1852, p. 215). Gloeo- 

 tila is a valid genus of algae and should not be used for bacteria. 



Glucobacter. See Glycobacter. 



Glycobacter, A generic name proposed by WoUmann (1912, p. 613) 

 for a group of amylolytic intestinal bacteria. Two species were de- 

 scribed of which the first, Glycobacter proteolyticus may be regarded 

 as the type. This organism was isolated from the ileum of a monkey. 

 It is a rod, usually straight, rarely slightly bent, about 1/x in diameter 

 and 2 to 6 or even lO/z in length. Cells usually isolated, rarely in 

 pairs, never in chains. The cells stain readily, but take the Gram 

 stain poorly. They do not give the granulose reaction. Spores are 

 readily produced, on agar within twenty-four hours. The spore is 

 subterminal or medium, the cell somewhat inflated. The spores are 

 resistant even to boiling temperatures. The bacilU are very motile. 



On sloped agar the cultures are quite transparent and delicate, where 

 colonies are isolated they reach 1 mm. in diameter. In sugar gelatin 

 shake cultures, small irregular colonies appear in twenty-four hours, 

 and gas is formed. Gas is formed in glucose broth in the first twenty- 

 four hours. Milk is feebly coagulated after forty-eight hours: whey 



