228 BACTERIOLOGY. 



in placing the sections twenty-four hours in the following 

 solution : 



Fuchsine ..... I 

 Distilled water . . . .100 



Alcohol 5 



Glacial acetic acid ... 2 



They are then rinsed with alcohol, transferred for a couple 

 of minutes to a 2 per cent, solution of acetic acid, and in 

 the usual way treated with alcohol and oil of cloves, and 

 preserved in Canada balsam. 



Bacterium pseudo-pneumonicum (Bacillus 

 pseudo-pneumonicus, Passet). Cocci round, oval, and 

 occasionally elongated, similar to the bacterium 

 of pneumonia. The oval forms are '87 ft in width, 

 and i'i6/u in length. The colonies on plates appear 

 in twenty- four hours as white dots ; in test-tubes 

 the growth develops as a greyish- white layer. 

 If injected into the pleura they set up pleuritis, 

 and into the abdomen peritonitis, in mice, rats, and 

 guinea-pigs. Subcutaneous inoculation produces 

 septicaemia in mice, and abscesses in rats, guinea- 

 pigs, and rabbits. Inhalation experiments gave 

 no results. They were isolated from pus. 



Bacterium Neapolitanum (Bacillus Neapoli- 

 tanus, Emmerich). Short rods with rounded ends. 

 In width *9 ^ (Fig. 77). They form circular colonies, 

 which later become irregular, granular, strongly 

 refractive, and of a yellowish-brown colour. By 

 introducing a large quantity into small animals 

 changes were produced in the intestines with an 



