i8 4 THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
DESCRIPTION OF PLATES 
PLATES XIII 
Fig. i. Culture of A in glucose Agar twenty-four hours old. Shews two chief varieties (i and 2). 
Budding forms (3). 
Fig. 2. Sub-varieties of A. Glucose broth three days old. 
Fig. 3. A forms shewing first stage of extrusion. Note escape of fine granules through micropyla. 
Fig. 4. A forms shewing further development of extrusion process. Note free spherical granules of 
larger size than in Fig. 3. 
Fig. 5. A forms with B forms from glucose agar culture. 
Fig. 6. Mycelium form. Note that free specimens are similar in type to A forms. 
PLATE XIV 
Fig. 1. Type B, from a culture isolated from case 2. 
Fig. 2. Tvpe A associated with Type B, in the lung ot guinea-pig. 
Fig. 3. Type A associated with Type B, from a lesion in a guinea-pig, produced by the inoculation 
of B. 
Fig. 4. Type B, ' involution ' forms. 
