While the use of the Widal reaction has become widespread in this country, and serum diagnosis has also been used to a considerable extent in dysentery and in summer complaint, its use in tuberculosis has been almost entirely neglected. Whether this is due to the technical difficulties which make this test more difficult than the Widal and allied reactions, or whether it is due to the fact that we are more apt to follow a German than a French example, is hard to say. It can not be denied, however, that in America this method of diagnosis has not been given an extended trial.
The matter was recently brought up by the originators of the test, Drs. Arloing and Courmont, at the Congress of Arts and Science in St. Louis, and a full description of the test with its drawbacks and difficulties was given.2 As the authors point out,