APPENDIX. 415 



(4) Streptococcus articulorum. Found in the mucous membrane and tonsils 

 of cases of diphtheria and scarlatina ; colonies grow slowly ; appear as 

 transparent watery greyish drops with delicate feather-like protrusions at 

 the margins ; chains have here and there larger cocci ; slight indications 

 of transverse division ; often kills rabbits and mice with formation of pus 

 in joints in which these streptococci are found ; this occurs specially when 

 cultivations are injected directly into the veins. 



(5) Diplococcus albicans tardissimus. Grows very slowly on nutrient 

 jelly, the track being only about imm. broad after several weeks ; grows 

 more rapidly on blood serum at the body temperature, when colonies form 

 as greyish-white points ; these have a peculiar moist appearance and an 

 irregular outline ; identical in form with the gonococcus (see p. 421), but 

 individuals are more adherent and form small masses. 



(6) Streptococcus septiciis. Colonies grow very slowly indeed ; seen as 

 fine points on fourth and fifth days in plate and puncture cultivations ; cocci 

 have a special tendency to form chains or diplococci ; fatal to mice in forty- 

 eight to seventy-two hours, to rabbits in three or four days, when injected 

 into veins ; vessels in various organs plugged with organism, this leading 

 to the formation of purulent or necrotic foci. 



(7) Micrococcus or Diplococcus of Trachoma. (Sattler). An organism 

 found in the contents of the follicles of the eyelids in cases of acute con- 

 junctivitis met with in Egypt ; in the contracted follicles met with in 

 trachoma. It grows on plates in the form of whitish clouds ; in gelatine 

 tubes it grows as pearly white tufts, little beads running along the line of 

 the needle ; later, these become slightly yellow ; on agar-agar, potatoes, 

 and blood serum we have a similar growth on the surface, which is usually 

 somewhat viscid ; grows best at the body temperature ; is a diplococcus, but 

 the line of division is not very distinctly marked ; the only motion that 

 has been noticed is a rotatory, or oscillatory one ; gives rise to trachoma 

 when inoculated into the eyelids of the human subject, but does not effect 

 rabbits. 



(8) Micrococcus of Cattle pneumonia {Micrococcus der Lungenseuche 

 der Kinder}. (Poels and Nolen). This organism grows on plates as sharply 

 circumscribed white rounded colonies with a delicate yellow tinge ; in 

 gelatine tubes it grows very much like Friedlander's pneumonia bacillus, 

 but in place of being white it has a delicate cream colour ; has a similar 

 growth on agar-agar ; on potatoes it forms a moist yellowish layer ; on 

 blood serum it is at first white but gradually assumes the cream colour 

 above mentioned ; this organism, which grows best at about 37 C., consists 

 of cocci of various sizes of an average diameter of .g/j, ; it is single, or may 

 be arranged in short chains of from two to six cocci ; is usually surrounded 

 by a somewhat deeply stained capsule ; pure cultures introduced into the 

 trachea of rabbits, guinea-pigs, dogs, and cattle produce pneumonia. 



(9) Micrococcus of Mastitis (Micrococciis der Mastitis der Kiihe). Obtained 

 by Kitt from the inflamed udder of the cow. On gelatine plates it grows as 

 little opalescent white rounded well-defined drops from the size of a pin's 

 head to a lentil ; in gelatine tubes it grows as a white opaque fungus-like 

 mass along the needle track ; on potatoes it occurs as a prominent layer, 

 whitish or dark yellow in colour, which after several days becomes moist 

 and glistening looking ; grows in milk at the temperature of the body, and 

 gives rise to a lactic acid fermentation ; a micrococcus .2^ to .5^1 in diameter, 

 usually in pairs, masses, or chains. 



