PLATE II. 



PIG. 



1. PROTEUS VULGARIS. Colony in the depth of a gelatine- 



plate x 100 ; thirty-six hours growth at 22 C. 



2. PROTEUS VULGARIS. Colony on the surface of a gelatine- 



plate x 100; thirty-six hours growth at 22 C. 



3. PROTEUS VULGARIS. Young colony in a gelatine-plate 



x 100 ; twenty-four hours growth at 22 C. 



4. PROTEUS MIRABILIS. Young colony in a gelatine-plate 



x 100; twenty-four hours growth at 22 C. 



5. PROTEUS ZOPFI. Surface colony in a gelatine-plate x 1 00; 



seventy- two hours growth at 22 C. 



6. PROTEUS MIRABILIS. Surface colony in a gelatine-plate 



x 100 ; seventy-two hours growth at 22 C. 



7. PROTEUS ZENKERI. Surface colony in a gelatine-plate 



x 100; seventy-two hours growth at 22 C. 



8. PROTEUS MIRABILIS. Zoogloea forms in the depth of a 



gelatine-plate x 100. 



