BACTERIOLOGY

found streptococci in the blood ; in 2 cases, Fraenkel's diplococcus lanceolatus ; in 1 case, bacillus paratyphosus. The streptococci found agreed completely in their morphological and biological properties with the streptococcus pyogenes longus sett erysipelatos. The organism was found in the blood during the first week in 9 of the cases; in the remaining 16 it was found from the second to the fifth weeks of the illness. It is important to note that the author never found streptococci on the first or second day of the fever. The clinical picture presented by those children in whose blood streptococci were found could not be differentiated in any respect from that of severe cases of scarlatina in which no streptococci were present. Cases in which streptococci were present in the blood were found, almost without exception, to terminate fatally. Deducting those cases in which scarlatinal nephritis proved fatal, the author found streptococci appearing in the blood in about 50 per cent of cases dying in the course of a scarlatinal infection. The organisms appeared in the blood in these cases shortly before death. The number of streptococci found in the blood during life is very small as compared with that found in the blood post-mortem. Nevertheless, it is important to notice that streptococci can multiply in the blood during life.. Seventy cases of scarlet fever were examined bacteriologically post-mortem. The blood was examined in 66 cases, the spinal cord in 16 cases, the parenchyma of the kidney in 54 cases, and the spleen pulp in 65 cases. From the blood of the cadaver, streptococci were obtained in 50 cases, the remaining 16 being sterile ; from the spinal cord streptococci were obtained in