For the circumstance that intellectual effort is called for in connection with the apprehension of a difficult and intricate subject-matter I would fain not be held responsible.
I may perhaps claim for the process of anti-typhoid inoculation that—first among the preventive inoculations which have application to man—it has been followed up step by step by scientific research.
The curves of immunisation which I have plotted out in the case of men inoculated with anti-typhoid vaccine, and the similar curves I have recently plotted out in connection with therapeutic inoculations of staphylococcus vaccine and tubercle vaccine respectively, are the outcome of a new system of technique devised for the measurement of the content in protective elements of small samples of blood withdrawn from the finger.
In conclusion, it may be well to make clear the following points:—
- My work in connection with anti-typhoid inoculation in the Army and it has included, in addition to laborious experimentation, the inoculation of 4,000 British soldiers all over India, and the supply of some 400,000 doses of anti-typhoid vaccine during the South African War has throughout been gratuitously given.
- Anti-typhoid inoculation was suspended in the Army 18 months ago at the instance of Mr. Brodrick's newly-created Medical Advisory Board.
- The Royal College of Physicians, to whose arbitrament the question of the efficacy of the anti-
