PLATE 2. 



Streptococcus lanceolatus. Gamaleia. (Diplococcus 

 pneumonise A. Frankel.) (Pneumococcus.) 



I. Gelatin stab culture, ten days at 22. 

 II. Agar streak culture, four days at 37. 



III. Agar stab culture, four days at 37. Stab canal. 



IV. Agar stab culture, four days at 37. Surface 

 growth. 



V. Agar plate, three days at 37. Natural size. 

 VI. Agar plate, three days at 37. X 50. Superficial 

 colony. The darker colony lies near the surface. 



VII. Agar plate, three days at 37. X 50. Deep col- 

 onies. 



VIII. Gelatin plate, eight days at 22. The upper colony 

 is superficial; the lower ones, deep. 



IX. Smear preparation from pneumonic sputum. 

 X 1000. 



X. Pure culture from a three days' old agar plate. 

 X 1000. 



XI. Microscopic preparations: (a) Diplococci as single 

 pairs and in chains. Highly magnified, (b) Diplococci 

 surrounded by gelatinous capsules. 



XI. 



