Abstract

A new method for the study of bacteria was recently described by one of us,1 in which it was pointed out that it was possible to dry down and stain colonies of bacteria only a few hours old. In these microcolonies the cell form and structure are quite as well brought out as they would be in a cover glass preparation and in addition the relation of cell to cell is easily studied. These colonies appear to show distinctive characters and the method promises to be of material aid in the study and recognition of bacteria. It is proposed in this paper to describe the results of a study of the microcolonies of some staphylococci, streptococci and pneumococci.

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