Further Observations on the Influence of Pandemic Waves in the Production of Fevers and Cholera

About ten years ago, while I was in charge of the Medical Department of the Army in Jamaica, I commenced an examination into the records of mortality at the various military stations in that island, to ascertain whether they indicated the operation of local causes that might be removed. I had proceeded but a little way before it became apparent that a cause of far more extensive operation was concerned, and, that until its laws were detected, there was no probability of