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EARLY in 1942, the British Food Mission called attention to the fact that Salmonella were being isolated from dried egg powder received in the British Isles for food purposes. It emphasized the undesirability of such contamination in a food product. The British. findings, however, were limited and restricted. In 1943, Seligmann, Saphra and Wassermann' reported the isolation of Salmonella senftenberg from a sample of egg powder. In the same year, Gibbons and Moore 2 reported the isolation of 9 types of Salmonella from Canadian spray-dried whole egg powder. This meager background of information made it clear that an investigation into the nature and extent of Salmonella contamination in dried egg should be undertaken.The incidence and types of Salmonella found in spray-dried whole egg powder manufactured in the TUnited States between September 1, 1943, and This investigation was undertaken in cc8peration with the Poultry Branch, Production and Marketing Administration,

A total of 108 strains of viridans streptococci from subacute bacterial endocarditis, and 99 strains from human throats and extracted teeth have been studied, and approximately two-thirds of all the strains so far have been differentiated into a number of serological groups. The similarity between strains from these sources is evident from the fact that approximately 50 per cent of the reacting strains from each source fall into two groups I and II, and that three groups I, II, and IV, contain streptococci from both sources in approximately the same distribution. Fifteen vaginal strains of viridians streptococci failed, with the exception of one strain, to react with groups I–IV of the endocarditis serums. More than three-fourths of the strains from both sources were Streptococcus salivarius as determined by Sherman's criteria. However, no correlation between the biochemical and serological classification could be made. It may be concluded that the viridans streptococci are amenable to classification by serological methods. The results so far obtained do not indicate a serological difference between strains of viridans streptococci isolated from subacute bacterial endocarditis, and those isolated from human throats and extracted teeth. The greater definitive value of serological methods in the identification of a particular strain is indicated.

THIS is the second report on the study of bacteria in the air of several types of locations in New York City. The first, a brief preliminary note,' was read before this section in 1936.The previous report summarized the findings as to average numbers of total bacteria and of alpha and beta streptococci, in 6 types of locations, during the first 16 weeks of the study. The present paper continues and elaborates the analysis of the findings, as to alpha streptococci, only, for an entire calendar year. The probable origin of the alpha streptococci found is also discussed, as well as the appearance, numerical frequency, and possible significance of certain variant forms.

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