Charles A. Cameron

An Address on Micro-Organisms and Disease.

THERE never has been a period since the days of iEsculapius during which so much has been accomplished to entitle medicine to take a place among the exact sciences as within the last ten or fifteen years. Up to that period, we knew diseases only as groups of effects. Of their causes we had no certain knowledge. As the methods of research adopted became stricter and more systematic, a mass of information was accumulated, pointing generally in one direction, and enabling more accurate hypotheses to be framed; but although, for