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EXPERIMENTAL DAIRY BACTERIOLOGY 



TABLE I 



A NUMERICAL SYSTEM OF RECORDING THE SALIENT 

 CHARACTERS OF AN ORGANISM (GROUP NUMBER) 



100. Endospores produced 



200. Endospores not produced 



10. Aerobic (strict) 



20. Facultative anaerobic 



30. Anaerobic (strict) 



1. Gelatin liquefied 



2. Gelatin not liquefied 



0.1 Acid and gas from dextrose 



0.2 Acid without gas from dextrose 



0.3 No acid from dextrose 



0.4 No growth with dextrose 



.01 Acid and gas from lactose 



.02 Acid without gas from lactose 



.03 No acid from lactose 



.04 No growth with lactose 



.001 Acid and gas from saccharose 



.002 Acid without gas from saccharose 



.003 No acid from saccharose 



.004 No growth with saccharose 



.0001 Nitrates reduced with evolution of gas 



.0002 Nitrates not reduced 



.0003 Nitrates reduced without gas formation 



.00001 Fluorescent 



.00002 Violet chromogens 



.00003 Blue chromogens 



.00004 Green chromogens 



.00005 Yellow chromogens 



.00006 Orange chromogens 



.00007 Red chromogens 



.00008 Brown chromogens 



.00009 Pink chromogens 



.00000 Nonchromogenic 



.000001 Diastasic action on potato starch (strong) 



.000002 Diastasic action on potato starch (feeble) 



.000003 Diastasic action on potato starch (absent) 



