Fig. 3. — Diplococcus in Sputum. 



Cover Glass Preparation, Gentian-Violet, ^ apochromat, 

 Projection ocular 6. x 1000. 



Fig. 4. — Streptococcus. 



Cover Glass Preparation, Agar Culture, Carbol-Fuchsine, 

 -^2 apochromat, Projection ocular 6. x icoo. 



