REFERENCES

W. W. Ford, The Life and Work of Robert Koch, Bulletin of the Johns Hopkins Hospital, Dec. 1911, vol. 22.

C. A. Herter, The Influence of Pasteur on Medical Science, Bulletin of the Johns Hopkins Hospital, Dec. 1903, vol. 14.

E. O. Jordan, General Bacteriology (fourth edition, 1915).

Charles C. W. Judd, The Life and Work of Lister, Bulletin of the Johns Hopkins Hospital, Oct. 1910, vol. 21.

Stephen Paget, Pasteur and After Pasteur.

W. T. Sedgwick, Principles of Sanitary Science.

René Vallery-Radot, Life of Pasteur.