54 



THE ORGANISM IS A SPIEILLUM. 



Spirillum Obermeieri, from the blood in cases of relapsing fever ; 

 slender, motile, spiral filaments, 16 to 41 ft ia length ; thinner 

 than spirillum cholerse ; has not been cultivated. 



Spirillum anserum, from the blood of geese suffering from septi- 

 caemia caused by this organism ; long, flexible, spiral filaments 

 in interlaced masses ; has not been grown ; actively motile. 



Spirillum cholerse. See p. 30. 



Spirillum of Finkler. See p. 30. 



Spirillum tyrogenum. See p. 30. 



Spirillum Metschnikovi. See p. SO. 



Spirillum sputigenum (MiUer), from the healthy mouth and margins 

 of inflamed gums ; smaU curved rods, actively motile, united in 

 short spiral filaments ; has not been grown. 



Spirillum dentium (MiQer), from the mouth; long, flexible, irregular 

 filaments, 8 to 25 /t long ; has not been cultivated. 



Vibrio rugula (Miiller), from dental tartar; rod-shaped cells, 6 to 8 /x 

 long, and upwards of 2 /i broad ; spores are developed at one 

 extremity of the rod, causing it to enlarge. 



Spirillum linguae (Weibel), from the deposit on the tongue by inocu- 

 lation through a mouse ; curved rods resembling spirillum 

 cholerse ; stains by Gram. 



Spirillum nasale (Weibel), from nasal mucus ; curved rods with 

 round ends, an aerobic organism growing very slowly on 

 gelatine. 



Spirillum a, P, y of Weibel, from hay infusion. 



Spirillum aureum, flavescens, and flavum (Weibel), from sewer- 

 water. 



Spirillum concentricum (Kitasato), from putrefying blood. 



Spirillum of Miller, from carious teeth ; straight or slightly-curved 

 rods, frequently in pairs as well as spiral filaments ; will grow 

 on agar. 



