The substance of the official medical reports upon the epidemic, called cholera: Which prevailed among the poor at Dantzick, between the end of May and the first part of September, 1831, as transmitted to their lordships; being an analysis of the said epidemic disease in that city--founded upon actual observation and accurate inquiry: With important and well-authenticated facts relative to the same disease, as it prevailed among the poor in other parts of the North of Europe.