XI.] 



BACILLUS : PATHOGENIC FORMS. 



85 



slightly thicker than those just mentioned. They form con- 

 tinuous masses, both in the capillaries and in the minute veins, 

 amounting in some cases to veritable emboli. They occur 

 isolated or in short chains, their length about O'OOl to 0'0025 

 ram., their thickness about 0003 to 0'0005 mm. Arloing 



FIG. 50. FROM A SECTION THROUGH A LYMPHATIC GLAND OF MAN DEAD 

 OF SEPTICAEMIA. 



1. A blood-vessel which at one place is distended by and 



filled with minute bacilli. 



2. Lymph-corpuscles. 



3. Degenerated lymph -corpuscles 



Magnifying power 700. (Stained with gentian violet.) 



and Chauveau (mentioned in the British Medical Journal, 

 Jan. 12, 1884) found in gangrenous septicaemia around wounds 

 short bacilli, some containing one or two spores, which they 

 consider as the true cause of the gangrene. They are destroyed 

 when fresh by a temperature varying between 90 and 100 C. ; 

 after drying, a temperature of 120 C. is required. 



