82 



GERMICIDAL ACTIVITY OP EUCALYPTUS OILS, i., 



steps of five, i.e , 5%, 10%, 15%, and so on up to 50%, then they 

 rose by 10 to 100%. The numbers obtained with the staphylo- 

 coccus are given for purposes of comparison. 



Table ii. 

 Bacteria suspended in serum and absorbed on cut ton. 



The oils which were bactericidal towards Ii, coli communis in 

 the more dilute solutions, were also generally most active towards 

 the staphylococcus, and, as with the staphylococcus, the activities 

 went roughly with the acidity. But there were exceptions, so 

 that when the acidities were plotted against the activities, as 

 represented by the bactericidal dilutions, instead of obtaining a 

 band, as in the staphylococcus, the numbers fell into a wedge- 

 shaped area. 



