VIII] MICROCOCCI 153 



coccus aureus and albus and two species of strepto- 

 cocci — one in which the chains are made of cocci of the 

 size of those of streptococcus pyogenes, and another of 

 much smaller cocci and forming shorter chains. 



10. Schiitz ' discovered that acute pharyngeal abscess in 

 the horse ("Druse") is caused by a streptococcus which 

 culturally differs from the streptococcus pyogenes principally 



Fig. 36. — Film Specimen of Capsulated Diplococcus Pneumonia in Rusty 

 Sputum of Acute Croupous Pneumonia. 

 X 1000. (A. Pringle.) 



in this that the former does not grow below 22° C. ; it acts 

 virulently on rodents, and its culture produced in horses the 

 typical pharyngeal abscess. 



II. Cases of acute pneumonia occur which are associated 

 with the copious presence of streptococci in the blood-vessels 

 as also in the air-cells ; they are considered by Finkler {Die 

 Lungenentziindungen, &c.) to have caused the pneumonia. 



' ArcMv f. wiss. tind frakt. Thierhcilk. vol. 14, No. 3. 



