Ogston soon realised there were '"two forms of micrococcus: one in the form of chains or necklaces to which the name 'streptococcus' had been given and produced the more violent inflammation, and the other growing in masses or clusters the roe of a fish, to which I gave the name 'staphylococcus' which cause a less violent inflammatory disease'. He also noted that a transferring a 1/146 016 000 dilution of the original pus sample could induce abscesses in new subjects. Ogston demonstrated that these bacteria could be killed by heat or carbolic acid, fulfilling Kochs postulates. He also noted that " micrococci so deleterious when injected" were seemingly "harmless on the surface of wounds and ulcers". An observation of the existence of some staphylococci as part of the normal flora.