266 BACTERIOLOGY 



of a cold in the head, and in association with the Staphylo- 

 coccus cereus flavus (see fig. 76). 



Bacillus foetidus ozsense. — Hajek found in the secretion 

 of patients suffering from ozana short actively motile rods, 

 during the growth of which the gelatine is liquefied. Eouud- 

 ish colonies form at first upon the gelatine plate, which 

 appear sunken like pock-marks while liquefaction is be- 

 ginning, but later become confluent and liquefy the 

 entire gelatine. In thrust-cultures the liquefaction shows 

 itself both superficially and along the track of the needle, 

 and if the culture is kept at 87° C. a strong odour of 

 putrefaction is developed, which is not the case at the 

 ordinary temperature. Upon agar a superficial coating 

 forms, and in like manner becomes foul-smelling at incuba- 

 tion temperature. A brownish deposit forms on potato. If 

 animals be injected subcutaneously with the cultures a 

 violent inflammation results, in the course of which the 

 tissues become necrosed. The bacilli completely discharge 

 their colour when treated by Gram's method. Hajek 

 particularly recommends staining with alkaline methyl 

 blue to which some aniline water has been added. Diluted 

 alcoholic solutions stain the bacilli only very slightly. 



Bacillus striatus albus at flavus. — Both bacilli were met 

 with by Von Besser in the normal nasal mucus, but the 

 Bacillus striatus albus is very rare. Gelatine is not liquefied. 

 A fairly good growth appears on the different nutrient media. 

 Upon potato a streaky layer forms. Bacillus striatus flavus 

 develops a sulphur-yellow pigment. 



Bacillus of rhinoscleroma. — The bacilli of rhinoscleroma 

 are short rods rounded at the ends, which are devoid of 

 power of automatic movement and are enclosed in capsules. 

 They are found in rhinoscleroma in the tissue of the tumours 

 and in the juice from them, and are believed to be the cause 

 of this form of disease. Von Frisch, Paltauf, Von Eiselsberg, 



