Micro-organisms oi? Maple SAr 549 



and milk. The separation of the strains into groups is shown 

 in the chart on the following page, where the relation existing 

 between ammonia production and fluorescence is also brought 

 out. In general the strains producing comparatively small 

 amounts of ammonia are the tardy liquefying and feebly fluores- 

 cent ones. 



