Image retrieved from “A textbook on disease-producing microorganisms: especially intended for the use of veterinary students and practitioners” (by Maximilian Joseph Herzog; published by Lea & Febiger, 1910), in which the caption reads “Colonies of bacillus antharacis upon gelatin plates at the end of forty-eight hours (x80, F. Flügge)”; image modified by MIC. The cover is published under the Creative Commons Attribution (CC BY) license.