VIL] MICROCOCCUS. 50 



was present, spreading from the seat of the inoculation. Sub- 

 serous haemorrhages appeared in the intestines ; and minute 

 haemorrhages were also present in the oedematous tissue and in 

 the muscles of the thigh and abdomen. The oedematous 

 fluid, the cutaneous veins, the capillaries in the kidney, espe- 

 cially those of the glomeruli, in the lung, and in the spleen, 

 contained numerous oval micrococci, singly, as dumb-bells, and 

 in zooglcea. The micrococci measured about 0*0008 to 0*001 

 mm. in their long diameter. These micrococci (taken with 

 the blood) produced in another rabbit and in a mouse the same 

 fatal disease. 



14. Micrococcus bombycis (Microzyma bombycis, Be'champ). 

 Oval micrococci, of about 0*0015 mm. in length, present in 

 large numbers, singly, and as dumb-bells and chains (straight 

 or curved), in the contents of the alimentary canal and in the 

 gastric fluid of silkworms dead of the " maladie de morts- 

 blancs, flacherie." Micrococcus ovatus, Nosema bombycis. 

 Present in large numbers in the blood and organs, ova in- 

 cluded, of silkworms affected with the disease called " maladie 

 des corpuscles," " pebrine," or Cornalia's disease. Cornalia first 

 saw them, afterwards Lebert and Nageli. Pasteur proved 

 definitely that ingestion as well as inoculation of the silk- 

 worms with the micrococci produces the disease. The micro- 

 cocci are comparatively large, 0*003 to 0*004 mm. long, 0*002 

 mm. broad ; they are very bright and occur singly, or in 

 dumb-bells, or in small groups. 



