454 



STATE BOARD OF AGRICULTURE 



Table I.— Concluded 



*These humbers refer to the soil media numbered respectively in Fred's Soil Bacteriology laboratory manual. 



The "ghost" or "phantom" colonies appeared m both plain and Dox's 

 agar after 3 to 4 days. Since Dox's agar was shghtly turbid the colonies 

 were somewhat more easy to see because they were more clear than the me- 

 dium. These colonies were never seen in a solid medium containing litmus 

 or other indicator even when growth (gas formation) was very evident. 



On 8/27 transfers were made into Dox's agar (see table 1) from inoculated 

 media which had been incubating over 4 months at 60°-65°C with the fol- 

 lowing results, growth showing inside of 72 hours: 



