Lloyd D. Felton

Learn More
We are dealing, as the results show, with groups of chemicals, all of which, whether bacteriotropic or not, greatly inhibit the engulfing of Staphylococcus aureus by leucocytes. Not a sufficiently large number of experiments was performed in attempt to cure experimental staphylococcus infections to warrant any condusion in regard to possible therapeutic(More)
1. An automatic apparatus is described by which a new supply of food can be furnished actively growing organisms at any desired interval of time-an automatic transferring device. 2. A single strain of pneumococcus, Type I, Neufeld, which had become avirulent for mice, acquired virulence of maximal degree when grown in the described apparatus with skimmed(More)
1. A simple technique is described for studying the oxidase action of bacteria by means of the oxidation of p-aminoleucomalachite green. 2. It is shown that pneumococci under aerobic conditions produced an oxidase when grown on suitable medium. The sera of any of seven different animal species constitute such a medium, the degree of oxidation by the(More)
The growth of a virulent Type I pneumococcus in an automatic transfer device on a medium which aerobically maintains virulence results in a decrease in the presence of pure oxygen or pure carbon dioxide, but in no change in the presence of nitrogen. Whereas partial pressures of oxygen, that is 5 parts with 95 parts nitrogen by volume, and 10 parts with 90(More)