Were all the rest of American medical scientists given liberal consideration in the _Britannica_, it would not compensate for the above omissions. But these omissions are by no means all: they are merely the beginning. The chief names in modern operative gynecology are American. But of the nine men who are the leaders in this field, only one (Emmet) has a biography, and only one (McDowell) receives casual mention. Marion Sims who invented his speculum and introduced the operation for vesicovaginal fistula, Nathan Bozeman, J. C. Nott (previously mentioned), Theodore Gaillard Thomas, Robert Battey, E. C. Dudley, and Howard A. Kelly do not exist for the _Britannica_. Furthermore, of the four chief pioneers in anæsthesia—the practical discovery and use of which was an American achievement—only two are mentioned. The other two—C. W. Long, of Georgia, and the chemist, Charles T. Jackson—are apparently unknown to the British editors of this encyclopædia. And although in the history of pediatrics there is no more memorable name than that of Joseph O’Dwyer, of Ohio, whose work in intubation has saved countless numbers of infants, you will fail to find any reference to him in this “unbiased” English reference work. One must not imagine that even here ends the _Britannica’s_ almost unbelievable injustice to American scientists. John J. Abel is not mentioned either, yet Professor Abel is among the greatest pharmacologists of the world. His researches in animal tissues and fluids have definitely set forward the science of medicine; and it was Abel who, besides his great work with the artificial kidney, first discovered the uses of epinephrin. R. G. Harrison, one of the greatest biologists of history, whose researches in the growth of tissue were epoch-making, and on whose investigations other scientists also have made international reputations, is omitted entirely from the _Britannica_. S. J. Meltzer, the physiologist, who has been the head of the department of physiology and pharmacology at Rockefeller Institute since 1906, is not in the _Britannica_. T. H. Morgan, the zoölogist, whose many books on the subject have long been standard works, is without a biography. E. B. Wilson, one of the great pathfinders in zoölogy and a man who stands in the front rank of that science, is also without a biography. And Abraham Jacobi, who is the father of pediatrics in America, is not mentioned.