[6]. Routine preparation of hands at Johns Hopkins Hospital.

[7]. Written especially for this book.

[8]. From puer, child, and parere, to bring forth.

[9]. “The Practice of Obstetrics,” by J. Clifton Edgar.

[10]. Alfred F. Hess, M.D., and Lester J. Unger, American Journal of Diseases of Children, April, 1919.

[11]. Alfred F. Hess, M.D., The Journal of the American Medical Association, Sept. 21, 1918.

[12]. “The Nursing Mother as a Factor of Safety in the Nutrition of the Young.” E. V. McCollum and N. Simmonds, The American Journal of Physiology, June, 1918.

[13]. “The Life of Pasteur,” by Vallery Radot.

[14]. The Committee consisted of Drs. J. Clifton Edgar, Ralph Lobenstein and Philip Van Ingen.

[15]. “Obstetrics,” by J. Whitridge Williams.