DESCRIPTION OF PLATE. 



1 . Bacillus lactis viscosus from an agar slant culture eight days 

 old, stained with carbol fuchsin. X i,ooo. A loopfulof the vis- 

 cid growth was drawn across the cover-glass. The linear arrange- 

 ment of the organisms probably is due to the capsules. 



2. Bacillus lactis viscosus from a bouillon culture three days 

 old, stained with carbol fuchsin. X i,ooo. This preparation 

 shows the extreme variation in size and the polar stain exhibited 

 by this organism when grown in bouillion. 



3. Drawing from a cover-glass preparation from a milk cul- 

 ture of Bacillus lactis viscosus twenty- four days old, stained with 

 carbol fuchsin. X 1,000. The presence of a capsule is 

 indicated by the unstained areas surrounding the organisms. 



